Endangered Listings - Sources
Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 2003. Ottawa, Ontario, Canada. (Site accessed 11 September 2003).
NOAA Fisheries, Northwest Regional Office. May 2, 2003. Seattle, Washington, U.S. (Site accessed 15 September 2003).
United State Fish & Wildlife Service, Endangered Species Program. Date Unknown. Threatened and Endangered Species System. Portland, Oregon, U.S. (Site accessed 16 September 2003).
State of California Department of Fish and Game, Habitat Conservation Division. July 2003. Sacramento, California, U.S. State and Federally Listed Endangered and Threatened Animals of California. (Site accessed 16 September 2003).
Oregon Natural Heritage Program. 2001. Rare, Threatened and Endangered Plants and Animals of Oregon (PDF). Oregon Natural Heritage Program, Portland, Oregon, U.S. Available (Site accessed 16 September 2003).
Bartenev, O.S., Ed. 2001. Krasnaia kniga Rossiiskoi Federatsii (zhivotnye) [Red Book of the Russian Federation, animals]. Moscow, Astrel'
Kondrat'ev, A.I., Ed. 1998. Krasnaia kniga Severa Dal'nego Vostoka; redkie I nakhodiaschiesia pod ugrozoi ischeznoveniia vidy zhivotnykh; shivotnye [Red Data Book of the Northern Far East of Russia; rare and endangered species of animals]. Moscow, Penta.
Vornov, B.A., Ed. 2000. Krasnaia kniga Khabarovskogo kraia; redkie I nakhodiashciesiapod ugrozoi ischeznoveniia vidy rastenii I zhivotnykh [Red Data Book Khabarovsk Territory; rare and endangered species of plants and animals, second edition]. Khabarovsk Territory, Instittue of Water and Ecological Problems.