एपीए उद्धरण

Cotton, P. B. (1973). Fibreoptic endoscopy and the barium meal--results and implications.

शिकागो स्टाइल उद्धरण

Cotton, P B. Fibreoptic Endoscopy and the Barium Meal--results and Implications. 1973.

एमएलए उद्धरण

Cotton, P B. Fibreoptic Endoscopy and the Barium Meal--results and Implications. 1973.