Citação norma APA

Wakefield, M. A., Chaloupka, F. J., Kaufman, N. J., Orleans, C. T., Barker, D. C., & Ruel, E. E. (2000). Effect of restrictions on smoking at home, at school, and in public places on teenage smoking: Cross sectional study. BMJ.

Citação norma Chicago

Wakefield, Melanie A., Frank J. Chaloupka, Nancy J. Kaufman, C Tracy Orleans, Dianne C. Barker, and Erin E. Ruel. "Effect of Restrictions On Smoking At Home, At School, and in Public Places On Teenage Smoking: Cross Sectional Study." BMJ 2000.

Citação norma MLA

Wakefield, Melanie A., et al. "Effect of Restrictions On Smoking At Home, At School, and in Public Places On Teenage Smoking: Cross Sectional Study." BMJ 2000.

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