Kram, Y., Klesges, R. C., Ebbert, J. O., Talcott, W., Neilands, T. B., & Ling, P. M. (2014). Dual Tobacco User Subtypes in the U.S. Air Force: Dependence, Attitudes, and Other Correlates of Use. Oxford University Press.

Kram, Yoseph, Robert C. Klesges, Jon O. Ebbert, Wayne Talcott, Torsten B. Neilands, ja Pamela M. Ling. Dual Tobacco User Subtypes in the U.S. Air Force: Dependence, Attitudes, and Other Correlates of Use. Oxford University Press, 2014.

Kram, Yoseph, et al. Dual Tobacco User Subtypes in the U.S. Air Force: Dependence, Attitudes, and Other Correlates of Use. Oxford University Press, 2014.