APA-čujuhus (7. p.)
Zwemer, S. M. (1915). The vital forces of Christianity and Islam: : six studies by missionaries to Moslems. Oxford University Press.
Chicago-čujuhus (17. p.)
Zwemer, S. M. The Vital Forces of Christianity and Islam: : Six Studies by Missionaries to Moslems. London: Oxford University Press, 1915.
MLA-čujuhus (9. p.)
Zwemer, S. M. The Vital Forces of Christianity and Islam: : Six Studies by Missionaries to Moslems. Oxford University Press, 1915.
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