May, W. E. (2001). Catholic sexual ethics. Catholic Information Service, Knights of Columbus Supreme Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMay, William E. Catholic Sexual Ethics. New Haven, CT: Catholic Information Service, Knights of Columbus Supreme Council, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMay, William E. Catholic Sexual Ethics. Catholic Information Service, Knights of Columbus Supreme Council, 2001.
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