APA (7th ed.) Citation

Scharff, R. (1969). Exploring Yellowstone National Park. World Pub. Co..

Chicago Style (17th ed.) Citation

Scharff, Robert. Exploring Yellowstone National Park. New York: World Pub. Co., 1969.

MLA (9th ed.) Citation

Scharff, Robert. Exploring Yellowstone National Park. World Pub. Co., 1969.

Warning: These citations may not always be 100% accurate.