Snow, C., & Center, U. S. B. o. L. M. D. S. (1974). Gyrfalcon, Falco rusticolus L. Denver : Bureau of Land Management, U.S. Dept. of the Interior, Denver Service Center.
Chicago Style (17th ed.) CitationSnow, Carol, and United States. Bureau of Land Management. Denver Service Center. Gyrfalcon, Falco Rusticolus L. Denver : Bureau of Land Management, U.S. Dept. of the Interior, Denver Service Center, 1974.
MLA (9th ed.) CitationSnow, Carol, and United States. Bureau of Land Management. Denver Service Center. Gyrfalcon, Falco Rusticolus L. Denver : Bureau of Land Management, U.S. Dept. of the Interior, Denver Service Center, 1974.
Warning: These citations may not always be 100% accurate.