Cita APA (7th ed.)

Niebuhr, R. (1953). Christian realism and political problems. Scribner.

Cita Chicago (17th ed.)

Niebuhr, Reinhold. Christian Realism and Political Problems. New York: Scribner, 1953.

Cita MLA (9th ed.)

Niebuhr, Reinhold. Christian Realism and Political Problems. Scribner, 1953.