Carroll LM (Oct 2000). "Application of singing techniques for the treatment of dysphonia". Otolaryngologic Clinics of North America. 33 (5): 1003–16. doi:10.1016/S0030-6665(05)70260-7. PMID10984766.
van Mersbergen M, Ostrem J, Titze IR (Jun 2001). "Preparation of the speech-language pathologist specializing in voice: an educational survey". J Voice. 15 (2): 237–50. doi:10.1016/S0892-1997(01)00024-8. PMID11411477.
Carroll LM (Oct 2000). "Application of singing techniques for the treatment of dysphonia". Otolaryngologic Clinics of North America. 33 (5): 1003–16. doi:10.1016/S0030-6665(05)70260-7. PMID10984766.
van Mersbergen M, Ostrem J, Titze IR (Jun 2001). "Preparation of the speech-language pathologist specializing in voice: an educational survey". J Voice. 15 (2): 237–50. doi:10.1016/S0892-1997(01)00024-8. PMID11411477.