Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

Drew, Clifford J., et al. Human Exceptionality: School, Community and Family. 9th ed. Houghton Mifflin Company, 2008.