An, H. S., & Simpson, J. M. (1994). Surgery of the cervical spine. Williams & Wilkins.
Lua i Stíl Chicago (17ú heag.)An, Howard S., agus J. Michael Simpson. Surgery of the Cervical Spine. Baltimore, MD: Williams & Wilkins, 1994.
Lua MLA (9ú heag.)An, Howard S., agus J. Michael Simpson. Surgery of the Cervical Spine. Williams & Wilkins, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.