Turnbull, A. P., & Turnbull, H. R. (1997). Families, professionals, and exceptionality: A special partnership (3rd ed.). Merrill.
Chicago-viite (17. p.)Turnbull, Ann P., ja H. Rutherford Turnbull. Families, Professionals, and Exceptionality: A Special Partnership. 3rd ed. Upper Saddle River, N.J: Merrill, 1997.
MLA-viite (9. p.)Turnbull, Ann P., ja H. Rutherford Turnbull. Families, Professionals, and Exceptionality: A Special Partnership. 3rd ed. Merrill, 1997.
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