Source:
Journal of Speech, Language, and Hearing ResearchJournal of Speech, Language, and Hearing Research, American Speech-Language-Hearing Association, 2001, 44 (2), pp.384-99
Source:
American Journal of Speech-Language PathologyAmerican Journal of Speech-Language Pathology, American Speech-Language-Hearing Association, 2012, 21 (4), pp.329-341.
Source:
Journal of Speech, Language, and Hearing ResearchJournal of Speech, Language, and Hearing Research, American Speech-Language-Hearing Association, 2005, 48 (3), pp.610-620.