นามูลตรี จ. . ., สบายยิ่ง ว. . ., and เมฆขจร น. . . “Factors Affecting Choosing Further Learning Programs of the High School Students”. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, vol. 15, no. 1, Apr. 2020, pp. 25-36, https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/241474.