Hallahan, D. P., & Kauffman, J. M. (2000). Exceptional learners: Introduction to special education (8th edition.). Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Hallahan, Daniel P., agus James M. Kauffman. Exceptional Learners: Introduction to Special Education. 8th edition. Boston, Massachusetts: Allyn and Bacon, 2000.
Lua MLA (9ú heag.)Hallahan, Daniel P., agus James M. Kauffman. Exceptional Learners: Introduction to Special Education. 8th edition. Allyn and Bacon, 2000.
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