Jehaman, I., M. Y. D. Yanto, and R. Tantangan. “Effect of William Flexion Exercise and Core Stability Exercise on Pain in Myogenic Low Back Pain”. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF), vol. 5, no. 2, Apr. 2023, pp. 397-04, doi:10.35451/jkf.v5i2.1573.