Wunpen Chansirinukor และผู้แต่งคนอื่นๆ. (2016) Correlation between Ball Exercise Level and Lumbar Stability Level in Patients with Non-specific Chronic Low Back Pain. Rangsit University:ม.ป.ท.Wunpen Chansirinukor และผู้แต่งคนอื่นๆ. 2016. Correlation between Ball Exercise Level and Lumbar Stability Level in Patients with Non-specific Chronic Low Back Pain. ม.ป.ท.:Rangsit University;Wunpen Chansirinukor และผู้แต่งคนอื่นๆ. Correlation between Ball Exercise Level and Lumbar Stability Level in Patients with Non-specific Chronic Low Back Pain. ม.ป.ท.:Rangsit University, 2016. Print.