APA (7th ed.) Citation

Eisner, P. (2013). The pope's last crusade: How an American Jesuit helped Pope Pius XI's campaign to stop Hitler. HarperLuxe.

Chicago Style (17th ed.) Citation

Eisner, Peter. The Pope's Last Crusade: How an American Jesuit Helped Pope Pius XI's Campaign to Stop Hitler. New York: HarperLuxe, 2013.

MLA (9th ed.) Citation

Eisner, Peter. The Pope's Last Crusade: How an American Jesuit Helped Pope Pius XI's Campaign to Stop Hitler. HarperLuxe, 2013.

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