APA

United States, . (1992). Environmental assessment reconstruct East Entrance Road: Yellowstone National Park, Wyoming, Montana, Idaho : draft. Denver, Colo.?: U.S. Dept. of the Interior, National Park Service.

Chicago

United States, . 1992. Environmental assessment reconstruct East Entrance Road: Yellowstone National Park, Wyoming, Montana, Idaho : draft. Denver, Colo.?: U.S. Dept. of the Interior, National Park Service.

Harvard

United States, . (1992). Environmental assessment reconstruct East Entrance Road: Yellowstone National Park, Wyoming, Montana, Idaho : draft. Denver, Colo.?: U.S. Dept. of the Interior, National Park Service.

MLA

United States, . Environmental assessment reconstruct East Entrance Road: Yellowstone National Park, Wyoming, Montana, Idaho : draft. Denver, Colo.?: U.S. Dept. of the Interior, National Park Service. 1992.