Cita APA (7a ed.)

Tillich, P., & Luther, A. (1948). The protestant era. University of Chicago Press.

Cita Chicago Style (17a ed.)

Tillich, Paul, y Adams Luther. The Protestant Era. Chicago: University of Chicago Press, 1948.

Cita MLA (8a ed.)

Tillich, Paul, y Adams Luther. The Protestant Era. University of Chicago Press, 1948.