APA (7th ed.) Citation

National Digestive Diseases Information Clearinghouse (U.S.). (2002). H. pylori and peptic ulcer. National Digestive Diseases Information Clearinghouse.

Chicago Style (17th ed.) Citation

National Digestive Diseases Information Clearinghouse (U.S.). H. Pylori and Peptic Ulcer. Bethesda, MD: National Digestive Diseases Information Clearinghouse, 2002.

MLA (9th ed.) Citation

National Digestive Diseases Information Clearinghouse (U.S.). H. Pylori and Peptic Ulcer. National Digestive Diseases Information Clearinghouse, 2002.