Hardman, M. L., Drew, C. J., & Egan, M. W. (2008). Human exceptionality: School, community, and family (9th ed.). Houghton Mifflin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHardman, Michael L., Clifford J. Drew, और M. Winston Egan. Human Exceptionality: School, Community, and Family. 9th ed. Boston: Houghton Mifflin, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHardman, Michael L., et al. Human Exceptionality: School, Community, and Family. 9th ed. Houghton Mifflin, 2008.
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