APA引文

Hughes, J., Shiffman, S., Callas, P., & Zhang, J. (2003). A meta-analysis of the efficacy of over-the-counter nicotine replacement. BMJ Group.

Citação norma Chicago

Hughes, J., S. Shiffman, P. Callas, and J. Zhang. A Meta-analysis of the Efficacy of Over-the-counter Nicotine Replacement. BMJ Group, 2003.

MLA引文

Hughes, J., S. Shiffman, P. Callas, and J. Zhang. A Meta-analysis of the Efficacy of Over-the-counter Nicotine Replacement. BMJ Group, 2003.

警告：這些引文格式不一定是100％准確.