Gaya APA

Hallahan, D, P., Kauffman, J, M. (1994). Exceptional children : introduction to special education (6th ed). Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Hallahan, Daniel, P.., Kauffman, James, M.. "Exceptional children : introduction to special education". 6th ed Englewood Cliffs, NJ: Prentice Hall, 1994. Text.