Cita APA (7a ed.)

Feuerbach, L., Barth, K., & Niebuhr, H. R. (1957). The essence of Christianity (1st Harper Torchbook ed.). Harper & Brothers.

Cita Chicago Style (17a ed.)

Feuerbach, Ludwig, Karl Barth, y H. Richard Niebuhr. The Essence of Christianity. 1st Harper Torchbook ed. New York: Harper & Brothers, 1957.

Cita MLA (9a ed.)

Feuerbach, Ludwig, et al. The Essence of Christianity. 1st Harper Torchbook ed. Harper & Brothers, 1957.