Muh Thahir, et al. “Effect of Infra-Red and Muscle Energy Technique on Pain and Range of Motion on Low Back Pain”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 76, no. 1, Feb. 2025, pp. 66-72, https://gssrr.org/JournalOfBasicAndApplied/article/view/17216.