APA
(1993). Journal of an international of gastroenterology and hepatology. London: BMJ.
Chicago
1993. Journal of an international of gastroenterology and hepatology. London: BMJ.
Harvard
(1993). Journal of an international of gastroenterology and hepatology. London: BMJ.
MLA
Journal of an international of gastroenterology and hepatology. London: BMJ. 1993.