Kajitnatitham, Maleerat. 2021. “Conditions and Needs in Developing Competency of the Science Teachers in Border Patrol Police Schools, Border Patrol Police Sub-Division 22”. Ubon Ratchathani Journal of Research and Evaluation 6 (1):49-58. https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/251033.