Kunphichaijirawut, N. “A study of the problem of paying the enrollment fees beyond the specified period of students from Sisaket Rajabhat University: ณัชชารีย์ กุลพิชัยจิราวุฒิ1* Natcharee Kunphichaijirawut1* มหาวิทยาลัยราชภัฏศรีสะเกษ Sisaket Rajabhat University Corresponding Author : wan.natcharee@gmail.com”. Research and Development Journal Sisaket Rajabhat University, vol. 10, no. 1, June 2023, pp. 32-44, https://so01.tci-thaijo.org/index.php/sskru-resarch/article/view/264956.