Cita APA (7a ed.)

Chaloupka, F. J., & Johnston, L. D. (2007). Bridging the gap: Research informing practice and policy for healthy youth behavior. American journal of preventive medicine, 33(4, Suppl), . doi:10.1016/j.amepre.2007.07.016

Cita Chicago Style (17a ed.)

Chaloupka, Frank J., y Lloyd D. Johnston. "Bridging the Gap: Research Informing Practice and Policy for Healthy Youth Behavior." American Journal of Preventive Medicine 33, no. 4, Suppl (2007). https://doi.org/10.1016/j.amepre.2007.07.016.

Cita MLA (9a ed.)

Chaloupka, Frank J., y Lloyd D. Johnston. "Bridging the Gap: Research Informing Practice and Policy for Healthy Youth Behavior." American Journal of Preventive Medicine, vol. 33, no. 4, Suppl, 2007, https://doi.org/10.1016/j.amepre.2007.07.016.