APA (7th ed.) Citation

John Paul II, P., & Messori, V. (1994). Crossing the threshold of hope. Knopf.

Chicago Style (17th ed.) Citation

John Paul II, Pope, and Vittorio Messori. Crossing the Threshold of Hope. New York: Knopf, 1994.

MLA (9th ed.) Citation

John Paul II, Pope, and Vittorio Messori. Crossing the Threshold of Hope. Knopf, 1994.

Warning: These citations may not always be 100% accurate.