APA (7th ed.) Citation

Guiberson, B. Z., & O'Brien, P. (1997). Teddy Roosevelt's elk. Holt.

Chicago Style (17th ed.) Citation

Guiberson, Brenda Z., and Patrick O'Brien. Teddy Roosevelt's Elk. New York: Holt, 1997.

MLA (8th ed.) Citation

Guiberson, Brenda Z., and Patrick O'Brien. Teddy Roosevelt's Elk. Holt, 1997.

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