Cita APA (7a ed.)

Kegley, C. W., & Bretall, R. W. (1952). The Theology of Paul Tillich. The Macmillan Company.

Cita Chicago Style (17a ed.)

Kegley, Charles W., y Robert W. Bretall. The Theology of Paul Tillich. New York: The Macmillan Company, 1952.

Cita MLA (9a ed.)

Kegley, Charles W., y Robert W. Bretall. The Theology of Paul Tillich. The Macmillan Company, 1952.