East, J., & Leedham, S. (2014). Colonoscopy, tumors. Georg Thieme Verlag.
Chicago Style aipamenaEast, J., and S. Leedham. Colonoscopy, Tumors. Georg Thieme Verlag, 2014.
MLA aipamenaEast, J., and S. Leedham. Colonoscopy, Tumors. Georg Thieme Verlag, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.