Cita APA (7a ed.)

Tillich, P., & Gomes, P. J. (2000). The courage to be (2nd ed. / with an introduction by Peter J. Gomes.). Yale University Press.

Cita Chicago Style (17a ed.)

Tillich, Paul, y Peter J. Gomes. The Courage to Be. 2nd ed. / with an introduction by Peter J. Gomes. New Haven [etc.]: Yale University Press, 2000.

Cita MLA (9a ed.)

Tillich, Paul, y Peter J. Gomes. The Courage to Be. 2nd ed. / with an introduction by Peter J. Gomes. Yale University Press, 2000.