Cita APA (7a ed.)

Kegley, C. W., & Bretall, R. W. (1956). Reinhold Niebuhr: His religious, social, and political thought. MacMillan.

Cita Chicago Style (17a ed.)

Kegley, Charles W., y Robert W. Bretall. Reinhold Niebuhr: His Religious, Social, and Political Thought. New York: MacMillan, 1956.

Cita MLA (9a ed.)

Kegley, Charles W., y Robert W. Bretall. Reinhold Niebuhr: His Religious, Social, and Political Thought. MacMillan, 1956.