Panwilai Chomchid และ Sunan Sung-ong. (2008) Using visuospatial models to enhance teaching and learning of atomic structure and the periodic table in high school chemistry. Kasetsart University,:ม.ป.ท.Panwilai Chomchid และ Sunan Sung-ong. 2008. Using visuospatial models to enhance teaching and learning of atomic structure and the periodic table in high school chemistry. ม.ป.ท.:Kasetsart University,;Panwilai Chomchid และ Sunan Sung-ong. Using visuospatial models to enhance teaching and learning of atomic structure and the periodic table in high school chemistry. ม.ป.ท.:Kasetsart University, 2008. Print.