Helfer, R. (1998). Modoc: The true story of the greatest elephant that ever lived (1st HarperPerennial ed.). HarperPerennial.
Style de citation Chicago (17e éd.)Helfer, Ralph. Modoc: The True Story of the Greatest Elephant That Ever Lived. 1st HarperPerennial ed. New York: HarperPerennial, 1998.
Style de citation MLA (8e éd.)Helfer, Ralph. Modoc: The True Story of the Greatest Elephant That Ever Lived. 1st HarperPerennial ed. HarperPerennial, 1998.
Attention : ces citations peuvent ne pas être correctes à 100%.