APA (7th ed.) Zitazioa
International Society for Study of the Lumbar Spine & Herkowitz, H. N. (2004). The lumbar spine (Third edition.). Lippincott Williams & Wilkins.
Chicago Style (17th ed.) Zitazioa
International Society for Study of the Lumbar Spine eta Harry N. Herkowitz. The Lumbar Spine. Third edition. Philadelphia: Lippincott Williams & Wilkins, 2004.
MLA (9th ed.) Zitazioa
International Society for Study of the Lumbar Spine eta Harry N. Herkowitz. The Lumbar Spine. Third edition. Lippincott Williams & Wilkins, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.