Style de citation APA (7e éd.)

Ahlberg, J., & Ahlberg, A. (1979). Each peach pear plum: An "I spy" story ([1st American ed.].). Viking Press.

Style de citation Chicago (17e éd.)

Ahlberg, Janet, et Allan Ahlberg. Each Peach Pear Plum: An "I Spy" Story. [1st American ed.]. New York: Viking Press, 1979.

Style de citation MLA (8e éd.)

Ahlberg, Janet, et Allan Ahlberg. Each Peach Pear Plum: An "I Spy" Story. [1st American ed.]. Viking Press, 1979.