APA引文

Lipperman-Kreda, S., Grube, J. W., & Friend, K. B. (2011). Local Tobacco Policy and Tobacco Outlet Density: Associations With Youth Smoking.

Citação norma Chicago

Lipperman-Kreda, Sharon, Joel W. Grube, and Karen B. Friend. Local Tobacco Policy and Tobacco Outlet Density: Associations With Youth Smoking. 2011.

MLA引文

Lipperman-Kreda, Sharon, Joel W. Grube, and Karen B. Friend. Local Tobacco Policy and Tobacco Outlet Density: Associations With Youth Smoking. 2011.

警告：這些引文格式不一定是100％准確.