1. Moore KL, Dalley AF. Clinically Oriented Anatomy. 4th ed. Philadelphia, New York: Lippincott Williams & Wilkins; 1999. p. 893‒894.
2. Hollinshead WH. Arteries: The Neck. In: Anatomy for Surgeons. The Head & Neck. Paul B Hoeber Inc, Medical Book Department of Harpers & Brothers, New York, USA; 1954. p. 467‒474.
3. Drake RL, Vogl AW, Mitchell AWM. Gray's Anatomy for Students. 2nd ed. New York: Edinburg-London-Melbourne, Churchill Livingstone; 2005. 976p.
4. The course of the prevertebral segment of the vertebral artery: anatomy and clinical significance;Matula;Surg Neurol,1997
5. Unusual vertebral artery origins: examples and related pathology;Koenigsberg;Catheter Cardiovasc Interv,2003