This article incorporates text in the public domain from page 987 of the 20th edition of Gray's Anatomy (1918)
Claudia R. Senesac; Mark Bishop (2010). Finley's Interactive Cadaveric Dissection Guide. Burlington, Massachusetts, USA: Jones & Bartlett Publishers. ISBN 9781449660475. Retrieved 27 August 2012. 9781449660475 ↩