APA ציטוט

Walker, M. M., & Baron, J. H. (1997). Hunterian peptic ulcers and Helicobacter pylori. Royal College of Surgeons of England.

Citação norma Chicago

Walker, M. M., and J. H. Baron. Hunterian Peptic Ulcers and Helicobacter Pylori. Royal College of Surgeons of England, 1997.

ציטוט MLA

Walker, M. M., and J. H. Baron. Hunterian Peptic Ulcers and Helicobacter Pylori. Royal College of Surgeons of England, 1997.