Παραπομπή σε μορφή APA (7η εκδ.)

Engstrom, S., & Whiting, J. (1998). Aristotle, Kant, and the Stoics: Rethinking happiness and duty. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Engstrom, Stephen, και Jennifer Whiting. Aristotle, Kant, and the Stoics: Rethinking Happiness and Duty. Cambridge: Cambridge University Press, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Engstrom, Stephen, και Jennifer Whiting. Aristotle, Kant, and the Stoics: Rethinking Happiness and Duty. Cambridge University Press, 1998.