APA-Zitierstil (7. Ausg.)

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

Chicago-Zitierstil (17. Ausg.)

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

MLA-Zitierstil (9. Ausg.)

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