APA引文

Carreira, H., Pereira, M., Azevedo, A., & Lunet, N. (2012). Trends in the prevalence of smoking in Portugal: A systematic review. BioMed Central.

Citação norma Chicago

Carreira, Helena, Marta Pereira, Ana Azevedo, and Nuno Lunet. Trends in the Prevalence of Smoking in Portugal: A Systematic Review. BioMed Central, 2012.

MLA引文

Carreira, Helena, Marta Pereira, Ana Azevedo, and Nuno Lunet. Trends in the Prevalence of Smoking in Portugal: A Systematic Review. BioMed Central, 2012.

警告：這些引文格式不一定是100％准確.