Tzeng, Ovid J.L.; Chen, Sylvia; Hung, Daisy L. (1991). «The classifier problem in Chinese aphasia». Brain and Language. 41 (2): 184–202. doi:10.1016/0093-934X(91)90152-Q. PMID1933258.
Goodglass H (1997). «Agrammatism in aphasiology». Clin. Neurosci. 4 (2): 51–6. PMID9059753.
Tzeng, Ovid J.L.; Chen, Sylvia; Hung, Daisy L. (1991). «The classifier problem in Chinese aphasia». Brain and Language. 41 (2): 184–202. doi:10.1016/0093-934X(91)90152-Q. PMID1933258.