BARRETO, C.; SEDIYONO, E.; HARTOMO, K. D. Soft System Methodology Implementation in Extraction of Knowledge about School Tuition Payment Problem. The International Journal of Science & Technoledge, [S. l.], v. 5, n. 9, 2017. Disponível em: http://internationaljournalcorner.com/index.php/theijst/article/view/123652. Acesso em: 8 jul. 2024.