APA citiranje

Evans, D. F., Robertson, C. S., Morris, D. L., Ledingham, S. J., Doran, J., & Hardcastle, J. D. (1991). An objective long-term evaluation of the Angelchik antireflux prosthesis. Royal College of Surgeons of England.

Citação norma Chicago

Evans, D. F., C. S. Robertson, D. L. Morris, S. J. Ledingham, J. Doran, and J. D. Hardcastle. An Objective Long-term Evaluation of the Angelchik Antireflux Prosthesis. Royal College of Surgeons of England, 1991.

MLA citiranje

Evans, D. F., et al. An Objective Long-term Evaluation of the Angelchik Antireflux Prosthesis. Royal College of Surgeons of England, 1991.