APA (7 वां संस्करण) प्रशस्ति पत्र
Pettingill, W. L. (1923). God's prophecies for plain people. The Philadelphia school of the Bible.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Pettingill, William L. God's Prophecies for Plain People. Philadelphia: The Philadelphia school of the Bible, 1923.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Pettingill, William L. God's Prophecies for Plain People. The Philadelphia school of the Bible, 1923.
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