Reuter, J. B. (1998). The gentle warrior: The story of Father George J. Willmann, S.J. Knights of Columbus, Father George J. Willman Charities.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रReuter, James B. The Gentle Warrior: The Story of Father George J. Willmann, S.J. Manila: Knights of Columbus, Father George J. Willman Charities, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रReuter, James B. The Gentle Warrior: The Story of Father George J. Willmann, S.J. Knights of Columbus, Father George J. Willman Charities, 1998.
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