จันทรวรรณ แก้วไสว (2023) “The Study of Maximum Phonation Time of Elderly in Nonthaburi Province: The Study of Maximum Phonation Time of Elderly in Nonthaburi Province”, Thai Journal of Otolaryngology Head and Neck Surgery, 23(2). Available at: https://he02.tci-thaijo.org/index.php/rcotJ/article/view/258275 (Accessed: 19 April 2024).