Tree, J., Kay, J., & Perfect, T. J. (2005). “Deep” language disorders in nonfluent progressive Aphasia: An evaluation of the “summation” account of semantic errors across language production tasks. Cognitive Neuropsychology, 22(6), pp. 643-659. doi:10.1080/02643290442000220
Chicago Style CitationTree, Jeremy, Janice Kay, and Timothy J. Perfect. "“Deep” Language Disorders in Nonfluent Progressive Aphasia: An Evaluation of the “summation” Account of Semantic Errors Across Language Production Tasks." Cognitive Neuropsychology 22, no. 6 (2005): 643-659.
MLA CitationTree, Jeremy, Janice Kay, and Timothy J. Perfect. "“Deep” Language Disorders in Nonfluent Progressive Aphasia: An Evaluation of the “summation” Account of Semantic Errors Across Language Production Tasks." Cognitive Neuropsychology 22.6 (2005): 643-659.