APA (7th ed.) Zitazioa

Heward, W. L. (2003). Exceptional children: An introduction to special education (7th ed.). Merrill.

Chicago Style (17th ed.) Zitazioa

Heward, William L. Exceptional Children: An Introduction to Special Education. 7th ed. Upper Saddle River, N.J.: Merrill, 2003.

MLA (9th ed.) Zitazioa

Heward, William L. Exceptional Children: An Introduction to Special Education. 7th ed. Merrill, 2003.