Tham khảo Nai Roosevelt

    • Merriam, 1897: Roosevelt's Wapiti–Cervus Roosevelti, a New Elk from the Olympics. Proceedings of the Biological Society of Washington 11 pp 272.
    • Erxleben, J.C.P. (1777) Anfangsgründe der Naturlehre and Systema regni animalis.
    • Robb, Bob (January 2001). The Ultimate Guide to Elk Hunting. The Lyons Press. ISBN 1-58574-180-9.
    • Nancy Gates, ed. (November 2006). The Alaska Almanac: Facts about Alaska 30th Anniversary Edition. Alaska Northwest Books. ISBN 0-88240-652-3.
    • Rennick, Penny (November 1996). Mammals of Alaska. Alaska Geographic Society. ISBN 1-56661-034-6.
    • Houston, Douglas; Jenkins, Kurt. "Roosevelt Elk Ecology". Truy cập 2007-12-28.