APA (7th ed.) Citation

Cheetham, N. Keepers of the keys: A history of the Popes from St. Peter to John Paul II.

Chicago Style (17th ed.) Citation

Cheetham, Nicolas. Keepers of the Keys: A History of the Popes from St. Peter to John Paul II.

MLA (8th ed.) Citation

Cheetham, Nicolas. Keepers of the Keys: A History of the Popes from St. Peter to John Paul II.

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