จันทรวรรณ แก้วไสว. The Study of Maximum Phonation Time of Elderly in Nonthaburi Province: The Study of Maximum Phonation Time of Elderly in Nonthaburi Province. rcotJ [Internet]. 2023 Jan. 27 [cited 2024 Apr. 20];23(2). Available from: https://he02.tci-thaijo.org/index.php/rcotJ/article/view/258275