Cita APA (7a ed.)

Troeltsch, E., & Niebuhr, H. R. (1981). The social teaching of the Christian Churches. The University of Chicago Press.

Cita Chicago Style (17a ed.)

Troeltsch, Ernst, y H. Richard Niebuhr. The Social Teaching of the Christian Churches. Chicago [etc.]: The University of Chicago Press, 1981.

Cita MLA (9a ed.)

Troeltsch, Ernst, y H. Richard Niebuhr. The Social Teaching of the Christian Churches. The University of Chicago Press, 1981.