Ritchie, C. J. (1951). While it is Day. Pacific Press Publishing Association.
Chicago-čujuhus (17. p.)Ritchie, C. J. While It Is Day. Mountain View, California: Pacific Press Publishing Association, 1951.
MLA-čujuhus (9. p.)Ritchie, C. J. While It Is Day. Pacific Press Publishing Association, 1951.
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