Aspen Systems Corporation. (2015). Topics in Language Disorders. Lippincott Williams & Wilkins.
Chicago-viite (17. p.)Aspen Systems Corporation. Topics in Language Disorders. Philadelphia, Pa: Lippincott Williams & Wilkins, 2015.
MLA-viite (8. p.)Aspen Systems Corporation. Topics in Language Disorders. Lippincott Williams & Wilkins, 2015.
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