APA citiranje

Reinbach, D. H., Cruickshank, G., & McColl, K. E. (1993). Acute perforated duodenal ulcer is not associated with Helicobacter pylori infection.

Citação norma Chicago

Reinbach, D H., G. Cruickshank, and K E. McColl. Acute Perforated Duodenal Ulcer Is Not Associated With Helicobacter Pylori Infection. 1993.

MLA citiranje

Reinbach, D H., G. Cruickshank, and K E. McColl. Acute Perforated Duodenal Ulcer Is Not Associated With Helicobacter Pylori Infection. 1993.