APA (7th ed.) Citation

Juan Pablo II, P., Messori, V., McPhee, J., & McPhee, M. (1994). Crossing the threshold of hope. Knopf.

Chicago Style (17th ed.) Citation

Juan Pablo II, Papa, Vittorio Messori, Jenny McPhee, and Martha McPhee. Crossing the Threshold of Hope. New York: Knopf, 1994.

MLA (9th ed.) Citation

Juan Pablo II, Papa, et al. Crossing the Threshold of Hope. Knopf, 1994.