APA引文

United States. Bureau of Reclamation. (1941). Western part of the United States showing location of federal irrigation projects (January 1941.). U.S. Dept. of the Interior, Bureau of Reclamation.

Chicago Style (17th ed.) Citation

United States. Bureau of Reclamation. Western Part of the United States Showing Location of Federal Irrigation Projects. January 1941. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Reclamation, 1941.

MLA引文

United States. Bureau of Reclamation. Western Part of the United States Showing Location of Federal Irrigation Projects. January 1941. U.S. Dept. of the Interior, Bureau of Reclamation, 1941.

警告：這些引文格式不一定是100％准確.