Citazione APA

Heward, W. L. (2006). Exceptional children: An introduction to special education (8th ed.). Pearson Education/Merrill/Prentice Hall.

Stile di citazione Chicago

Heward, William L. Exceptional Children: An Introduction to Special Education. 8th ed. Upper Saddle River, N.J.: Pearson Education/Merrill/Prentice Hall, 2006.

Citazione MLA

Heward, William L. Exceptional Children: An Introduction to Special Education. 8th ed. Pearson Education/Merrill/Prentice Hall, 2006.