Armstrong, D. (2006). Top ten questions Catholics are asked. Our Sunday Visitor.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रArmstrong, David. Top Ten Questions Catholics Are Asked. Huntington, IN: Our Sunday Visitor, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रArmstrong, David. Top Ten Questions Catholics Are Asked. Our Sunday Visitor, 2006.
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