BABBIE, E. (1984). Apple Logo For Teachers Earl Babbie. Wardsworth Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBABBIE, Earl. Apple Logo For Teachers Earl Babbie. Wardsworth Publishing, 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBABBIE, Earl. Apple Logo For Teachers Earl Babbie. Wardsworth Publishing, 1984.
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