APA引文

Nicholas, J. L. (1982). Facial expression in acute appendicitis. Royal College of Surgeons of England.

Citação norma Chicago

Nicholas, J. L. Facial Expression in Acute Appendicitis. Royal College of Surgeons of England, 1982.

MLA引文

Nicholas, J. L. Facial Expression in Acute Appendicitis. Royal College of Surgeons of England, 1982.

警告：這些引文格式不一定是100％准確.