ສີສຸລາດ ທ. ສອນເພັດ, ພົມວິຈິດ ທ. ກິຄໍາ, Syamphone PHOMMATHAM, ສີຈັນດອນ ນ. ນົກທະວິວັນ, ຈັນທະນາຄອນ ປອ. ແສງສຸລິຍາ, ແກ້ວປະເສີດ ທ. ສົມໃຈ, and ແກ້ວກະເສີມສຸກ ທ. ສະເຫຼີມໄຊ. “Year 7 Students’ Problems in the Use of Lao Language. A Case Study of Students in a Secondary School in Champasak Province ”. Champasack University Scientific Journal 4, no. 4 (July 4, 2020): 111–122. Accessed August 26, 2026. http://cu-journal.com/index.php/files/article/view/36.