APA Citation

(1991). Duodenal ulcer, gastric acid, and Helicobacter pylori.

Citação norma Chicago

Duodenal Ulcer, Gastric Acid, and Helicobacter Pylori. 1991.

MLA Citation

Duodenal Ulcer, Gastric Acid, and Helicobacter Pylori. 1991.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.