The national parks :
shaping the system /
produced by the Division of Publications, National Park Service.

APA Citation

Mackintosh, B., United States. National Park Service. Division of Publications. (1985). The national parks: shaping the system. Washington, D.C.: U.S. Dept. of The Interior.

MLA Citation

Mackintosh, Barry, and United States. National Park Service. Division of Publications. The National Parks: Shaping the System. Washington, D.C.: U.S. Dept. of The Interior, 1985.

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