Hawkins, J. D., & Nederhood, B. (1987). Handbook for evaluating drug and alcohol prevention programs: Staff/team evaluation of prevention programs, (STEPP). DHHS publication.
Chicago-Zitierstil (17. Ausg.)Hawkins, J. David, und Britt Nederhood. "Handbook for Evaluating Drug and Alcohol Prevention Programs: Staff/team Evaluation of Prevention Programs, (STEPP)." DHHS Publication 1987.
MLA-Zitierstil (8. Ausg.)Hawkins, J. David, und Britt Nederhood. "Handbook for Evaluating Drug and Alcohol Prevention Programs: Staff/team Evaluation of Prevention Programs, (STEPP)." DHHS Publication, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.