Hardman, M. L., Drew, C. J., & Egan, M. W. (2008). Human exceptionality: School, community, and family (9th ed.). Houghton Mifflin.
Chicago-Zitierstil (17. Ausg.)Hardman, Michael L., Clifford J. Drew, und M. Winston Egan. Human Exceptionality: School, Community, and Family. 9th ed. Boston: Houghton Mifflin, 2008.
MLA-Zitierstil (9. Ausg.)Hardman, Michael L., et al. Human Exceptionality: School, Community, and Family. 9th ed. Houghton Mifflin, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.