APA citiranje

Keighley, M. R., Grobler, S., & Bain, I. (1993). An audit of restorative proctocolectomy.

Citação norma Chicago

Keighley, M R., S. Grobler, and I. Bain. An Audit of Restorative Proctocolectomy. 1993.

MLA citiranje

Keighley, M R., S. Grobler, and I. Bain. An Audit of Restorative Proctocolectomy. 1993.