APA-čujuhus (7. p.)
Martin, W. (1975). Screwtape writes again. Vision House.
Chicago-čujuhus (17. p.)
Martin, Walter. Screwtape Writes Again. Santa Ana: Vision House, 1975.
MLA-čujuhus (9. p.)
Martin, Walter. Screwtape Writes Again. Vision House, 1975.
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