Cita APA (7a ed.)
Greenstein, A. J., Janowitz, H. D., & Sachar, D. B. (1976). The extra-intestinal complications of Crohn's disease and ulcerative colitis: A study of 700 patients. Medicine, 55(5), 401-413.
Cita Chicago Style (17a ed.)
Greenstein, A J., H D. Janowitz, y D B. Sachar. "The Extra-intestinal Complications of Crohn's Disease and Ulcerative Colitis: A Study of 700 Patients." Medicine 55, no. 5 (1976): 401-413.
Cita MLA (9a ed.)
Greenstein, A J., et al. "The Extra-intestinal Complications of Crohn's Disease and Ulcerative Colitis: A Study of 700 Patients." Medicine, vol. 55, no. 5, 1976, pp. 401-413.
Precaución: Estas citas no son 100% exactas.