Niebuhr, R. (1965). Man's nature and his communities: Essays on the dynamics and enigmas of man's personal and social existence. Charles Scribner's Sons.

Niebuhr, Reinhold. Man's Nature and His Communities: Essays on the Dynamics and Enigmas of Man's Personal and Social Existence. New York: Charles Scribner's Sons, 1965.

Niebuhr, Reinhold. Man's Nature and His Communities: Essays on the Dynamics and Enigmas of Man's Personal and Social Existence. Charles Scribner's Sons, 1965.