Style de citation APA (7e éd.)

Graef, O. d., & Frankfurt, H. G. (1998). The importance of being earnest (about the right things). Ethical perspectives, 5(1), 15-21.

Style de citation Chicago (17e éd.)

Graef, Ortwin de, et Harry G. Frankfurt. "The Importance of Being Earnest (about the Right Things)." Ethical Perspectives 5, no. 1 (1998): 15-21.

Style de citation MLA (8e éd.)

Graef, Ortwin de, et Harry G. Frankfurt. "The Importance of Being Earnest (about the Right Things)." Ethical Perspectives, vol. 5, no. 1, 1998, pp. 15-21.