Style de citation APA (7e éd.)

Hansen, J. (1981). A smile in his lifetime: Joseph Hansen (1. Auflage.). Holt, Rinehart and Winston.

Style de citation Chicago (17e éd.)

Hansen, Joseph. A Smile in His Lifetime: Joseph Hansen. 1. Auflage. New York: Holt, Rinehart and Winston, 1981.

Style de citation MLA (8e éd.)

Hansen, Joseph. A Smile in His Lifetime: Joseph Hansen. 1. Auflage. Holt, Rinehart and Winston, 1981.