Brubaker, O. J. (1972). Understanding people. Evangelical Teacher Training Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBrubaker, Omar J. Understanding People. Evangelical Teacher Training Association, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBrubaker, Omar J. Understanding People. Evangelical Teacher Training Association, 1972.
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