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. Journal of Innovation Research and Knowledge, [S. l.], v. 5, n. 5, p. 5937–5944, 2025. Disponível em: https://www.bajangjournal.com/index.php/JIRK/article/view/11445. Acesso em: 4 oct. 2025.