Wilderness U.S.A.
[Introd. by Sigurd F. Olson. Essays by Edward Abbey and others. Drawings by Dill Cole and George Founds. Photos. by Lowell Georgia and others.

APA Citation

National Geographic Book Service. (1973). Wilderness U.S.A. Washington]: National Geographic Society.

MLA Citation

National Geographic Book Service. Wilderness U.S.A. Washington]: National Geographic Society, 1973.

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