APA引文

Johnson, A., & Joynes, E. V. (2001). MMR vaccination uptake in a rural setting.

Citação norma Chicago

Johnson, A., and E V. Joynes. MMR Vaccination Uptake in a Rural Setting. 2001.

MLA引文

Johnson, A., and E V. Joynes. MMR Vaccination Uptake in a Rural Setting. 2001.

警告：這些引文格式不一定是100％准確.