APA-referens (7:e uppl.)

Hardman, M. L., Drew, C. J., & Egan, M. W. (2008). Human exceptionality: School, community, and family (9th ed.). Houghton Mifflin.

Chicago-referens (17:e uppl.)

Hardman, Michael L., Clifford J. Drew, och M. Winston Egan. Human Exceptionality: School, Community, and Family. 9th ed. Boston: Houghton Mifflin, 2008.

MLA-referens (9:e uppl.)

Hardman, Michael L., et al. Human Exceptionality: School, Community, and Family. 9th ed. Houghton Mifflin, 2008.