O'Brien, K. R. (1949). The nature of support of diocesan priests in the United States of America: A historical synopsis and a commentary. Catholic University of America Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Brien, Kenneth R. The Nature of Support of Diocesan Priests in the United States of America: A Historical Synopsis and a Commentary. Washington: Catholic University of America Press, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Brien, Kenneth R. The Nature of Support of Diocesan Priests in the United States of America: A Historical Synopsis and a Commentary. Catholic University of America Press, 1949.
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