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Wasson K, McLaughlin TF, Derby KM, Clark A. THE EFFECTS OF USING FUNCTIONAL COMMUNICATION TRAINING AND VERBAL IMITATION TO TEACH TWO PRESCHOOL STUDENTS WITH DEVELOPMENTAL DELAYS THE WORD “HELP.” IJEE. 2013;2(2):570-578. Accessed November 12, 2026. https://ijee.org/ijee/article/view/1330