Heward, W. L. (2003). Exceptional children: An introduction to special education (7th ed.). Merrill.
Chicago-čujuhus (17. p.)Heward, William L. Exceptional Children: An Introduction to Special Education. 7th ed. Upper Saddle River, N.J.: Merrill, 2003.
MLA-čujuhus (9. p.)Heward, William L. Exceptional Children: An Introduction to Special Education. 7th ed. Merrill, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.