APA-viite (7. p.)
Pettingill, W. L. (1923). God's prophecies for plain people. The Philadelphia school of the Bible.
Chicago-viite (17. p.)
Pettingill, William L. God's Prophecies for Plain People. Philadelphia: The Philadelphia school of the Bible, 1923.
MLA-viite (9. p.)
Pettingill, William L. God's Prophecies for Plain People. The Philadelphia school of the Bible, 1923.
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