Barrett, R. S. (1929). The care of the unmarried mother.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarrett, Robert South. The Care of the Unmarried Mother. Alexandria, Va, 1929.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBarrett, Robert South. The Care of the Unmarried Mother. 1929.
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