APA (7th ed.) Citation

Tillich, P., & Sardelli, G. (1961). The courage to be ([6th printing].). Yale University Press.

Chicago Style (17th ed.) Citation

Tillich, Paul, and Giuseppe Sardelli. The Courage to Be. [6th printing]. New Haven: Yale University Press, 1961.

MLA (9th ed.) Citation

Tillich, Paul, and Giuseppe Sardelli. The Courage to Be. [6th printing]. Yale University Press, 1961.