APA (7th ed.) Zitazioa

Bonhoeffer, D. (1955). Ethics. Macmillan.

Chicago Style (17th ed.) Zitazioa

Bonhoeffer, Dietrich. Ethics. New York: Macmillan, 1955.

MLA (9th ed.) Zitazioa

Bonhoeffer, Dietrich. Ethics. Macmillan, 1955.