Cox, J., D.C., Low Back Pain, Mechanism, Diagnosis and Treatment, 6th Edition, Williams and Wilkins, 1998.
Cyriax, J., M.D., The Slipped Disc. Gower Press, 1970.
Giles, L.G., D.C. Magnetic Resonance Imaging and Clinical Follow-up: Study of 27 Patients Receiving Chropractic Care for Cervical and Lumbar Disc Herniations. Journal of Manipulative and Physiological Therapeutics, 20(7): 495-7, 1997.
Frymoyer, J.W., M.D. (editor), The Adult Spine: Principles and Practice, 2nd edition. Lippincott-Raven,1997: 1844.
Kirkaldy-Willis, M.D., Managing Low Back Pain, 4th Edition. Churchill Livingstone, 1999:331-5.
Kuo, F., Loh, C., Treatment of Lumbar Intervertebral Disc Protrusions by Manipulation. Clinical Orthopedics, 215:47, 1987.
McCulloch, J.A., MacNab's Backache. 3rd edition. Williams &Wilkins, 200.
Nwuga, VCB: Relative Therapeutic Efficacy of Vertebral Manipulation and Conventional Treatment in Back Pain Management. American Journal of Physical Medicing, 61(6): 273-8, 1982.
White, A., M.D. Panjabi, M., M.D., Clinical Biomechanics of the Spine, 2nd edition. Lippincott, 1990: 399, 417.