Citazione Stile APA (7a Edizione)

Tillich, P. (2000). The courage to be (Second edition.). Yale University Press.

Citazione stile Chigago Style (17a edizione)

Tillich, Paul. The Courage to Be. Second edition. New Haven: Yale University Press, 2000.

Citatione MLA (9a ed.)

Tillich, Paul. The Courage to Be. Second edition. Yale University Press, 2000.