คงรอด จิราพร. “Using the Jigsaw Technique to Improve Knowledge and Understanding of 4th Year Business Administration Students, Thaksin University, Marketing Planning Subject”. Parichart Journal 30, no. 3 (October 9, 2017): 9–14. Accessed April 29, 2024. https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/101045.