Chittavaro, PhraVonexay, PhrakhruPhawana phothikhun, and Suwin Thongpan. 2019. “Socialist Philosophy Of Kaysonphomviharn During The Period 1975-1990”. Journal of Graduate MCU KhonKaen Campus 6 (4):904-19. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/240479.