Schmidt, C. M., Baltussen, R. M. P. M., & Sauerborn, R. (1999). The evaluation of community based interventions: Group randomization, limits and alternatives. Discussion paper series.
Chicago-Zitierstil (17. Ausg.)Schmidt, Christoph M., Rob M. P. M. Baltussen, und Rainer Sauerborn. "The Evaluation of Community Based Interventions: Group Randomization, Limits and Alternatives." Discussion Paper Series 1999.
MLA-Zitierstil (9. Ausg.)Schmidt, Christoph M., et al. "The Evaluation of Community Based Interventions: Group Randomization, Limits and Alternatives." Discussion Paper Series, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.