APA引文

Farrell, R. J. (1990). The Angelchik antireflux device: A 5-year experience. Royal College of Surgeons of England.

Citação norma Chicago

Farrell, R. J. The Angelchik Antireflux Device: A 5-year Experience. Royal College of Surgeons of England, 1990.

MLA引文

Farrell, R. J. The Angelchik Antireflux Device: A 5-year Experience. Royal College of Surgeons of England, 1990.

警告：這些引文格式不一定是100％准確.