APA (7th ed.) Citation

Helfer, R. (1998). Modoc: The true story of the greatest elephant that ever lived (1st HarperPerennial ed.). HarperPerennial.

Chicago Style (17th ed.) Citation

Helfer, Ralph. Modoc: The True Story of the Greatest Elephant That Ever Lived. 1st HarperPerennial ed. New York: HarperPerennial, 1998.

MLA (8th ed.) Citation

Helfer, Ralph. Modoc: The True Story of the Greatest Elephant That Ever Lived. 1st HarperPerennial ed. HarperPerennial, 1998.

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