ทองพันธ์กรรณิกา, ชัยชมชื่นสุธิดา, and แสนราชจรัญ. “THE DEVELOPMENT OF ONLINE-ACTIVITY BASED LEARNING SYSTEM ACCORDING TO R2D2 MODEL AND INTEGRATED WITH CREATING OF KNOWLEDGE MAP FOR DEVELOP TO ENHANCE TEACHER COMPETENCY”. Journal of Industrial Education 15, no. 1 (April 29, 2016): 91-97. Accessed July 13, 2020. https://ph01.tci-thaijo.org/index.php/JIE/article/view/122267.