Srisiri, Sununta, Ploywan Khoomphai, and Sununta Manusmongkol. 2024. “THE RECREATION ACTIVITIES BEHAVIOR, OPTIMISM TOWARD ADJUSTMENT BEHAVIOR AMONG UNDERGRADUATE STUDENTS OF RAJAMANGALA UNIVERSITY OF TECHNOLOGY PHRA NAKHON”. Journal of Faculty of Physical Education 27 (1). Nakhon Nayok, Thailand. https://he03.tci-thaijo.org/index.php/peswuJ/article/view/2376.