Zahari, Z. ., . M. . Justine, and . N. A. . Ishak. “Reliability and Validity of Malay Version of Revised Oswestry Low Back Pain Disability Questionnaire ”. Healthscope: The Official Research Book of Faculty of Health Sciences, UiTM, vol. 2, Aug. 2020, http://healthscopefsk.com/index.php/research/article/view/72.