Ramo, D. E., Delucchi, K. L., Hall, S. M., Liu, H., & Prochaska, J. J. (2013). Marijuana and Tobacco Co-Use in Young Adults: Patterns and Thoughts About Use. Rutgers University.

Ramo, Danielle E., Kevin L. Delucchi, Sharon M. Hall, Howard Liu, och Judith J. Prochaska. Marijuana and Tobacco Co-Use in Young Adults: Patterns and Thoughts About Use. Rutgers University, 2013.

Ramo, Danielle E., et al. Marijuana and Tobacco Co-Use in Young Adults: Patterns and Thoughts About Use. Rutgers University, 2013.