S.Syafiq Mazlan, et al. “A DEVELOPMENT OF ANTERIOR CRUCIATE LIGAMENT (ACL) DIAGNOSIS SYSTEM USING FUZZY INFERENCE SYSTEM”. Malaysian Journal of Industrial Technology , vol. 1, no. 1, June 2016, pp. 18-24, https://ejournal.unikl.edu.my/index.php/mjit/article/view/507.