APA (7th ed.) Zitazioa
Niebuhr, R., & Brown, R. M. (1986). The essential Reinhold Niebuhr: Selected essays and addresses. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Niebuhr, Reinhold, eta Robert McAfee Brown. The Essential Reinhold Niebuhr: Selected Essays and Addresses. New Haven: Yale University Press, 1986.
MLA (9th ed.) Zitazioa
Niebuhr, Reinhold, eta Robert McAfee Brown. The Essential Reinhold Niebuhr: Selected Essays and Addresses. Yale University Press, 1986.
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