KITTIWUTTHISAKDI, Kowit, Punsiri DAM-O, Nathaporn SUWANPAYAK, and Ratchanee THAMMADECHO. 2011. “Development of ‘Functional Groups in Molecules’ Models For Fundamental Science Curriculum”. Walailak Journal of Science and Technology (WJST) 4 (2):249-58. https://wjst.wu.ac.th/index.php/wjst/article/view/103.