APA

Wills G., . (2000). Papal sin. New York: Doubleday.

Chicago

Wills Garry, . 2000. Papal sin. New York: Doubleday.

Harvard

Wills G., . (2000). Papal sin. New York: Doubleday.

MLA

Wills Garry, . Papal sin. New York: Doubleday. 2000.