Gaya APA

O'Malley, J, W. (2010). A History of the Popes: From Peter to the Present (First Edition). United Kingdom: Rowman & Littlefied Publishers, Inc..

Gaya MLA

O'Malley, John, W. "A History of the Popes: From Peter to the Present". First Edition United Kingdom: Rowman & Littlefied Publishers, Inc., 2010. e-book.