APA引文

Freedman, D. O. (2003). SARS—lessons learned so far. Travel Med Infect Dis.

Citação norma Chicago

Freedman, David O. "SARS—lessons Learned so Far." Travel Med Infect Dis 2003.

MLA引文

Freedman, David O. "SARS—lessons Learned so Far." Travel Med Infect Dis 2003.

警告：這些引文格式不一定是100％准確.