Kirk, S. A., & Lord, F. E. (1974). Exceptional children: Educational resources and perspectives. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Kirk, Samuel Alexander, agus Francis Everette Lord. Exceptional Children: Educational Resources and Perspectives. Boston: Houghton Mifflin, 1974.
Lua MLA (9ú heag.)Kirk, Samuel Alexander, agus Francis Everette Lord. Exceptional Children: Educational Resources and Perspectives. Houghton Mifflin, 1974.
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