A dictionary of the popes, from Peter to Pius XII
MLA
Attwater, Donald. A Dictionary of the Popes, From Peter to Pius Xii. London: Burns, Oates & Washbourne, Ltd, 1939
APA, 7th edition
Attwater, D. (1939). A dictionary of the popes, from Peter to Pius XII. London: Burns, Oates & Washbourne, Ltd
Chicago, 17th edition
Attwater, Donald. A dictionary of the popes, from Peter to Pius XII. London: Burns, Oates & Washbourne, Ltd, 1939