Walsh, M. M., Langer, T. J., Kavanagh, N., Mansell, C., MacDougal, W., Kavanagh, C., & Gansky, S. A. (2010). Smokeless tobacco cessation cluster randomized trial with rural high school males: Intervention interaction with baseline smoking. Oxford University Press.

Walsh, Margaret M., Timothy J. Langer, Niall Kavanagh, Chuck Mansell, William MacDougal, Catherine Kavanagh, ja Stuart A. Gansky. Smokeless Tobacco Cessation Cluster Randomized Trial With Rural High School Males: Intervention Interaction With Baseline Smoking. Oxford University Press, 2010.

Walsh, Margaret M., et al. Smokeless Tobacco Cessation Cluster Randomized Trial With Rural High School Males: Intervention Interaction With Baseline Smoking. Oxford University Press, 2010.