1. Return Postage in Mail Surveys a Meta-Analysis
2. Biglan, A., D. Hood, P. Brozovsky, L. Ochs, D. Ary, and C. Black. 1991. Subject attrition in prevention research. (DHHS Publication No. ADM 91-1761). In Drug abuse prevention intervention research: Methodological issues, edited by C. G. Leukefeld and W. J. Bukoski. National Institute on Drug Abuse Research Monograph Series 107:213-34.