APA (7th ed.) Citation

World Wilderness Congress Denver, Colo. and Estes Park, Colo, & Martin, V. (1988). For the conservation of earth. Fulcrum, Inc..

Chicago Style (17th ed.) Citation

World Wilderness Congress Denver, Colo. and Estes Park, Colo, and Vance Martin. For the Conservation of Earth. Golden, Colo.: Fulcrum, Inc., 1988.

MLA (9th ed.) Citation

World Wilderness Congress Denver, Colo. and Estes Park, Colo, and Vance Martin. For the Conservation of Earth. Fulcrum, Inc., 1988.