มงกุฎวิสุทธิ์ ศ. Volunteer works of university Lecturers: Case of Thammasat University. ๋JBA_apheit [internet]. 2018 Jun. 29 [cited 2026 Sep. 30];7(พิเศษ):73-84. available from: https://so02.tci-thaijo.org/index.php/apheitvu/article/view/131723