Rafif Himawan Nimasdwi Putra, Agus Riyanto, Suci Muqodimatul Jannah. PERBEDAAN PENGARUH PEMBERIAN WILLIAM FLEXION EXERCISE DAN ISOMETRIC EXERCISE TERHADAP PENINGKATAN KEMAMPUAN FUNGSIONAL PADA PENDERITALOW BACK PAIN NON SPESIFIK. JIRK [Internet]. 2025 Oct. 1 [cited 2025 Oct. 4];5(5):5937-44. Available from: https://www.bajangjournal.com/index.php/JIRK/article/view/11445