APA Citatie

Sanders, R. (1967). Incidence of perforated duodenal and gastric ulcer in Oxford.

Chicago Style citaat

Sanders, R. Incidence of Perforated Duodenal and Gastric Ulcer in Oxford. 1967.

MLA citatie

Sanders, R. Incidence of Perforated Duodenal and Gastric Ulcer in Oxford. 1967.

Let op: Deze citaties zijn niet altijd 100% accuraat.