Style de citation APA (7e éd.)

Smiles, S. (1881). Duty: With illustrations of courage, patience and endurance. Harper & Brothers.

Style de citation Chicago (17e éd.)

Smiles, Samuel. Duty: With Illustrations of Courage, Patience and Endurance. New York: Harper & Brothers, 1881.

Style de citation MLA (8e éd.)

Smiles, Samuel. Duty: With Illustrations of Courage, Patience and Endurance. Harper & Brothers, 1881.