คำปลิว ภ., and ทวีปวรเดช ว. “Online Students Statistics Report System in 3-D Bar Graph on Google Earth”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 1, no. 1, Jan. 2013, pp. 90-94, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/211349.