Niebuhr, R., & Brown, R. M. (1986). The essential Reinhold Niebuhr: Selected essays and addresses. Yale University Press.
芝加哥风格引文Niebuhr, Reinhold, 与 Robert McAfee Brown. The Essential Reinhold Niebuhr: Selected Essays and Addresses. New Haven: Yale University Press, 1986.
MLA引文Niebuhr, Reinhold, 与 Robert McAfee Brown. The Essential Reinhold Niebuhr: Selected Essays and Addresses. Yale University Press, 1986.
警告：这些引文格式不一定是100％准确.