Please cite this data as follows, and pay attention to the rights documented in the rights.txt: 
Please respect the rights declared for each dataset in the download: 
Wildlife Sightings - (http://www.wildlifesightings.net)
NatureServe Central Databases (accessed through GBIF data portal, http://data.gbif.org/datasets/resource/607, [DATE])
Western New Mexico University Mammal Collection
Mammal Collection, University of Alaska Museum (UAM)
University of California, Davis Wildlife and Fisheries Museum
Varied sources. Individual references may be obtained from website (paleodb.org)
iNaturalist.org: iNaturalist research-grade observations
Biodiversity Research and Teaching Collections, Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, USA.
MSU Mammalogy, Ornithology and Vertebrate Paleontology Collections
European Molecular Biology Laboratory (EMBL): Geographically tagged INSDC sequences
Cite the source of recordings as Macaulay Library (ML).<br><br>

When possible, include the following data in your citation:<br><br>

ML Media-collection Catalog-number<br>
Common Name - Scientific name<br>
Recordist<br>
Location<br>
Date<br>
Macaulay Library/Cornell<br><br>

For example:<br><br>

ML Audio 2081<br>
Green Heron - Butorides virescens<br>
Sutherland, Charles A<br>
United States, New York, Tompkins, 3 km NE of Ithaca, Sapsucker Woods Pond<br>
29 July 1962<br>
Macaulay Library, www.macaulaylibrary.org<br>
Cornell Lab of Ornithology<br><br>

To cite an online recording, use the URL from the specimen record page. This URL is a stable globally unique identifier, or GUID, and also approximates the format for a life science identifier(LSID): <br><br>

institution_collection_catalog# <br>
(e.g. macaulaylibrary.org/video/12345).<br><br>

The long url form should not be used. <br>
(e.g. macaulaylibrary.org/video/12345/cardinal-new-york-2011).<br><br>

For more information: http://macaulaylibrary.org/cite-recordings
Museum of Biological Diversity, The Ohio State University: Ohio State University Tetrapod Division - Mammal Collection (OSUM)
TTU Mammals Collection
PSM Collection
University of Wyoming Museum of Vertebrates
Bioimages (http://bioimages.vanderbilt.edu/)
New Mexico Biodiversity Collections Consortium internet accessible database, provided through DiGIR protocol.
SBMNH Vertebrate Collection
UNSM
National Museum of Nature and Science, Japan: Ibaraki Nature Museum, Mammals collection
Natural History Museum, University of Oslo: Mammal collection, Natural History Museum, University of Oslo
University of Alberta Museums: University of Alberta Museums, Mammalogy Collection
University of Tennessee - Chattanooga (UTC): (UTCFM) University of Tennessee - Fossil Mammals Collection
BeBIF Provider: University of Ghent - Zoology Museum - Vertebratacollectie
New York State Museum
San Diego Natural History Museum: Mammal specimens
Mamíferos de Nuevo León, México (UANL)
University of Washington Burke Museum. Mammal Collection. Seattle, Washington.
Division of Mammals, Museum of Southwestern Biology (MSB)
-
Sam Noble Oklahoma Museum of Natural History: Mammals Specimens
University of California Museum of Paleontology
University of Colorado Museum of Natural History Mammals Collection
University of Arkansas Collections Facility, UAFMC: UAFMC Mammals
AMNH Mammal Collection
Laboratory for Environmental Biology, Centennial Museum, University of Texas at El Paso
CNMA, Portal UNIBIO, Instituto de Biología, Universidad Nacional Autónoma de México, http://www.unibio.unam.mx consultada el dd/mm/yy.
Museum of Vertebrate Zoology (MVZ), University of California, Berkeley
Denver Museum of Nature & Science Mammal Collection
naturgucker.de: naturgucker
National Museum of Nature and Science, Japan: Mammal specimen database of Kanagawa Prefectural Museum of Natural History
LSUMZ Mammals Collection
Gothenburg Natural History Museum (GNM): Vertebrates of the Gothenburg Natural History Museum (GNM)
California Academy of Sciences: CAS Mammalogy (MAM)
Natural History Museum of Los Angeles County: LACM Vertebrate Collection
Sosa Fernández, V., Hernández A. y J. Bello. 1998. Inventario de los mamíferos de las reservas de la biósfera Mapimí, La Michilía, El Cielo y Calakmul. Instituto de Ecología A.C. Bases de datos SNIB2010-CONABIO proyecto No. P027. México, D.F.
Senckenberg: Collection Mammalia SMF
University of Tennessee - Chattanooga (UTC): (UTC) University of Tennessee Mammals Collection
Humboldt State University Wildlife Museum
UMMZ Mammal Collection
Museum of Southwestern Biology (MSB) Division of Parasitology
Swedish Museum of Natural History: NRM-Mammals
John Wesley Powell-Dale Birkenholz Natural History Collections, Illinois State University
University of Alaska Museum, Earth Sciences Collection
Tall Timbers Research Station and Land Conservancy: TTRS Mammals
Magaña Cota, G. E. 2004. Colección científica del Museo de Historia Natural Alfredo Dugès. Universidad de Guanajuato. Bases de datos SNIB2010-CONABIO. Proyecto No. V002. México, D.F.
Yale Peabody Museum, (c) 2009. Specimen data records available through distributed digital resources.
New Mexico Museum of Natural History and Science
Escobar Ocampo, M. C., Morales Pérez, J. E., Hernández García, E., Guzmán Hernández, J., Riechers Pérez, A. y E. E. Espinoza Medinilla. 2006. Sistematización de las colecciones científicas del Instituto de Historia Natural y ecología, (IHNE) Chiapas. Instituto de Historia Natural y Ecología. Bases de datos SNIB2010-CONABIO. IHNE_Vertebrados proyectos No. V050, L018 y P060. México, D.F.
Royal Ontario Museum: Mammalogy Collection - Royal Ontario Museum
Cornell University Museum of Vertebrates: CUMV Mammal Collection (Arctos)
Senckenberg: Collection Anatomie Histologie - SMF
North Carolina Museum of Natural Sciences Mammals Collection
Field Museum: Field Museum of Natural History (Zoology) Mammal Collection
Cowan Tetrapod Collection at the University of British Columbia Beaty Biodiversity Museum (UBCBBM)
Museo Argentino de Ciencias Naturales: Colección Nacional de Mastozoología - Museo Argentino de Ciencias Naturales 'Bernardino Rivadavia'
National Museum of Natural History, Smithsonian Institution: NMNH occurrence DwC-A
Mammal tissues, Division of Genomic Resources, UNM, Albuquerque, NM.
Australian Museum: Australian Museum provider for OZCAM
Ruedi M. Mammals housed at MHNG, Geneva. Muséum d'histoire naturelle de la Ville de Genève
Facultad de Ciencias Naturales y Museo - U.N.L.P.: Colección de Mastozoología
Natural History Museum Rotterdam: Natural History Museum Rotterdam (NL) - Chordata collection
CCBER Mammalogy Collection
South Australian Museum: South Australian Museum Australia provider for OZCAM
NatureServe Central Databases
University Museum of Zoology Cambridge, UMZC
Naturalis Biodiversity Center: Zoological Museum Amsterdam, University of Amsterdam (NL) – Mammalia
Royal Belgian Institute of Natural Sciences: RBINS collections
Museum of Comparative Zoology, Harvard University: Museum of Comparative Zoology, Harvard University
North Carolina Museum of Natural Sciences Vertebrate Paleontology Collection
KU Mammal Collection
Charles R. Conner Museum
UCLA-Dickey
Royal Ontario Museum: Vertebrate Palaeontology Comparative Osteology Collection - Royal Ontario Museum