O'Keeffe, M., O'Sullivan, P., Dankaerts, W., & O'Sullivan, K. (2015). Swiss ball enhances lumbar multifidus activity in chronic low back pain: A letter to the editor. Churchill Livingstone.
Chicago Style (17th ed.) CitationO'Keeffe, M., Peter O'Sullivan, W. Dankaerts, and K. O'Sullivan. Swiss Ball Enhances Lumbar Multifidus Activity in Chronic Low Back Pain: A Letter to the Editor. Churchill Livingstone, 2015.
MLA (9th ed.) CitationO'Keeffe, M., et al. Swiss Ball Enhances Lumbar Multifidus Activity in Chronic Low Back Pain: A Letter to the Editor. Churchill Livingstone, 2015.
Warning: These citations may not always be 100% accurate.