Cita APA

Wilson, J. M., & Darby, C. R. (1990). Perforated duodenal ulcer: An unusual complication of gastroenteritis.

Chicago Style Citation

Wilson, J M., i C R. Darby. Perforated Duodenal Ulcer: An Unusual Complication of Gastroenteritis. 1990.

Cita MLA

Wilson, J M., i C R. Darby. Perforated Duodenal Ulcer: An Unusual Complication of Gastroenteritis. 1990.