W. Khumsuk, B. Prempreesuk, C. Suttipan, R. Chiraniratisai, and K. Nantapong, “THE DEVELOPMENT OF TRAINING COURSE FOR TEACHERS IN DESIGNING LEARNING MANAGEMENT BY USING GPAS 5 STEPS FOR PROMOTING INNOVATION-CREATING OF THE SECONDARY SCHOOL STUDENTS”, JEI, vol. 25, no. 4, pp. 299–308, Aug. 2023.