Friedman, Alfred. "Does Drug and Alcohol Use Lead to Failure to
Graduate from High School?" _Journal of Drug Education_, Vol. 15(4),
1985.
Johnston, Lloyd D., Jerald G. Bachman, and Patrick M. O'Malley.
_Monitoring the Future Questionnaire Responses From the Nation's High
School Seniors._ Ann Arbor, MI, University of Michigan, Institute for
Social Research, forthcoming (and unpublished information).
Tobias, Joyce M. _Kids and Drugs._ Annandale, VA, Panda Press, 1986.