APA引文

Crichton, D. (1988). Points: Ultrasonography for diagnosing appendicitis.

Citação norma Chicago

Crichton, Derek. Points: Ultrasonography for Diagnosing Appendicitis. 1988.

MLA引文

Crichton, Derek. Points: Ultrasonography for Diagnosing Appendicitis. 1988.

警告：這些引文格式不一定是100％准確.