Willging, E. P. (1937). The Index to American Catholic pamphlets. Catholic Library Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWillging, Eugene P. The Index to American Catholic Pamphlets. [Saint Paul, Minn.: Catholic Library Service, 1937.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWillging, Eugene P. The Index to American Catholic Pamphlets. Catholic Library Service, 1937.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.