General management plan :
Effigy Mounds National Monument, Iowa.

APA Citation

United States. National Park Service. Denver Service Center. (1991). General management plan: Effigy Mounds National Monument, Iowa. [Denver, Colo.?]: U.S. Dept. of the Interior, National Park Service, Denver Service Center.

MLA Citation

United States. National Park Service. Denver Service Center. General Management Plan: Effigy Mounds National Monument, Iowa. [Denver, Colo.?]: U.S. Dept. of the Interior, National Park Service, Denver Service Center, 1991.

Warning: These citations may not always be complete (especially for serials).