APA (7th ed.) Citation

Calí, G. (1996). Paul Tillich first-hand: A memoir of the Harvard years. Exploration Press.

Chicago Style (17th ed.) Citation

Calí, Grace. Paul Tillich First-hand: A Memoir of the Harvard Years. Chicago, Ill: Exploration Press, 1996.

MLA (9th ed.) Citation

Calí, Grace. Paul Tillich First-hand: A Memoir of the Harvard Years. Exploration Press, 1996.