APA

Juan Pablo II, . (1994). Crossing the threshold of hope. New York: Alfred A. Knopf.

Chicago

Juan Pablo II, . 1994. Crossing the threshold of hope. New York: Alfred A. Knopf.

Harvard

Juan Pablo II, . (1994). Crossing the threshold of hope. New York: Alfred A. Knopf.

MLA

Juan Pablo II, . Crossing the threshold of hope. New York: Alfred A. Knopf. 1994.