APA引文

Duffy, S. J., & Alison, J. F. (2009). Permanent pacemaker implantation via a persistent left superior vena cava. Clin Cardiol.

Citação norma Chicago

Duffy, Stephen J., and Jeffrey F. Alison. "Permanent Pacemaker Implantation Via a Persistent Left Superior Vena Cava." Clin Cardiol 2009.

MLA引文

Duffy, Stephen J., and Jeffrey F. Alison. "Permanent Pacemaker Implantation Via a Persistent Left Superior Vena Cava." Clin Cardiol 2009.

警告：這些引文格式不一定是100％准確.