Monitoring the Future Suvey
Johnston, L. D., O'Malley, P. M., Bachman, J. G., & Schulenberg, J. E. (December 14, 2011). "Marijuana use continues to rise among U.S. teens, while alcohol use hits historic lows." University of Michigan News Service: Ann Arbor, MI. Retrieved 12/17/2011 from
Press Release