วงษ์ใหญ่ วาสนา. “ชาคำฝอย”. RMUTSB ACADEMIC JOURNAL 1, no. 1 (January 1, 2013): 10–15. Accessed May 15, 2024. https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/98107.