กำจัดภัย ส. 2019. A Model for Developing Student Teacher’s Competency on The Teaching Practicum Preparation Based on Empowerment and Active Learning Instruction: A Case Study in Sakon Nakhon Rajabhat University. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University. 14, 1 (Apr. 2019), 151–161.