Cita APA (7th ed.)
Niebuhr, H., & Beach, W. (1955). Christian ethics: Sources of the living tradition. Ronald Press.
Cita Chicago (17th ed.)
Niebuhr, H.Richard, i Waldo Beach. Christian Ethics: Sources of the Living Tradition. New York: Ronald Press, 1955.
Cita MLA (9th ed.)
Niebuhr, H.Richard, i Waldo Beach. Christian Ethics: Sources of the Living Tradition. Ronald Press, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.