Crotalus willardi (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Crotalus willardi" in English language version.

refsWebsite

Global rank English rank

2iucnredlist.org

88^th place

160^th place

2^nd place

2^nd place

low place

low place

1reptilesofaz.org

low place

low place

1web.archive.org

1^st place

1^st place

low place

low place

low place

low place

656^th place

1,126^th place

azgfd.com

Arizona Rattlesnakes: Rattlesnake Facts, Arizona Game and Fish Department, retrieved 2019-05-16

doi.org

Hammerson, G.A.; Vazquez Díaz, J.; Quintero Díaz, G.E. (2007). "Crotalus willardi". IUCN Red List of Threatened Species. 2007: e.T62253A12584209. doi:10.2305/IUCN.UK.2007.RLTS.T62253A12584209.en. Retrieved 19 November 2021.

ebeltz.net

Beltz, Ellin (2006). Biographies of People Honored in the Names of the Reptiles and Amphibians of North America

itis.gov

"Crotalus willardi ". Integrated Taxonomic Information System. Retrieved 16 May 2007.

iucnredlist.org

Hammerson, G.A.; Vazquez Díaz, J.; Quintero Díaz, G.E. (2007). "Crotalus willardi". IUCN Red List of Threatened Species. 2007: e.T62253A12584209. doi:10.2305/IUCN.UK.2007.RLTS.T62253A12584209.en. Retrieved 19 November 2021.
2001 Categories & Criteria (version 3.1) at the IUCN Red List. Accessed 13 September 2007.

reptilesofaz.org

Brennan, Thomas (2008). "RIDGE-NOSED RATTLESNAKE Crotalus willardi". Retrieved 16 May 2019. http://www.reptilesofaz.org/Snakes-Subpages/h-c-willardi.html Archived 2016-08-11 at the Wayback Machine

web.archive.org

Brennan, Thomas (2008). "RIDGE-NOSED RATTLESNAKE Crotalus willardi". Retrieved 16 May 2019. http://www.reptilesofaz.org/Snakes-Subpages/h-c-willardi.html Archived 2016-08-11 at the Wayback Machine

wikipedia.org

fr.wikipedia.org

McDiarmid RW, Campbell JA, Touré T (1999). Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).