APA (7th ed.) Citation

Tufts, L. S., & Buchanan, A. (1990). Secrets in Yellowstone & Grand Teton National Parks (2nd ed.). National Photographic Collections.

Chicago Style (17th ed.) Citation

Tufts, Lorraine Salem, and Al Buchanan. Secrets in Yellowstone & Grand Teton National Parks. 2nd ed. North Palm Beach, Fla.: National Photographic Collections, 1990.

MLA (9th ed.) Citation

Tufts, Lorraine Salem, and Al Buchanan. Secrets in Yellowstone & Grand Teton National Parks. 2nd ed. National Photographic Collections, 1990.