APA (7 वां संस्करण) प्रशस्ति पत्र

O'Hagan, A. P. (1968). Material Re-Creation in the Apostolic Fathers: By Angelo P. O'Hagan OFM. Akademie-Verl..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

O'Hagan, Angelo P. Material Re-Creation in the Apostolic Fathers: By Angelo P. O'Hagan OFM. Berlin: Akademie-Verl., 1968.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

O'Hagan, Angelo P. Material Re-Creation in the Apostolic Fathers: By Angelo P. O'Hagan OFM. Akademie-Verl., 1968.