Lertlop and  W,  Model of Appropriate Science Teaching for Mathayomsuksa 3 (Grade 9) in Ang-Thong Province.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 73(1). 86 - 88
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/8102.