North American Division Corporation of Seventh-Day Adventists. (2007). Sabbath school investment. Adventsource.
Chicago-čujuhus (17. p.)North American Division Corporation of Seventh-Day Adventists. Sabbath School Investment. Lincoln, NE: Adventsource, 2007.
MLA-čujuhus (9. p.)North American Division Corporation of Seventh-Day Adventists. Sabbath School Investment. Adventsource, 2007.
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