Lua APA (7ú heag.)

Turnbull, A., & Turnbull, R. (1999). Exceptional lives: Special education in today's schools (2nd ed.). Merrill.

Lua i Stíl Chicago (17ú heag.)

Turnbull, Ann, agus Rud Turnbull. Exceptional Lives: Special Education in Today's Schools. 2nd ed. New Jersey: Merrill, 1999.

Lua MLA (9ú heag.)

Turnbull, Ann, agus Rud Turnbull. Exceptional Lives: Special Education in Today's Schools. 2nd ed. Merrill, 1999.

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