Style de citation APA (7e éd.)

Edgar, W. C. (1912). The story of a grain of wheat. Appleton.

Style de citation Chicago (17e éd.)

Edgar, William C. The Story of a Grain of Wheat. New York: Appleton, 1912.

Style de citation MLA (8e éd.)

Edgar, William C. The Story of a Grain of Wheat. Appleton, 1912.