Citação norma APA

Levy, D., Friend, K., Holder, H., & Carmona, M. (2001). Effect of policies directed at youth access to smoking: Results from the SimSmoke computer simulation model. BMJ Group.

Citação norma Chicago

Levy, D., K. Friend, H. Holder, and M. Carmona. Effect of Policies Directed At Youth Access to Smoking: Results From the SimSmoke Computer Simulation Model. BMJ Group, 2001.

Citação norma MLA

Levy, D., K. Friend, H. Holder, and M. Carmona. Effect of Policies Directed At Youth Access to Smoking: Results From the SimSmoke Computer Simulation Model. BMJ Group, 2001.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.