Fraker, T. M., & Maynard, R. (1987). The adequacy of comparison group designs for evaluations of employment-related programs. The journal of human resources, 22(2), .
Chicago-Zitierstil (17. Ausg.)Fraker, Thomas M., und Rebecca Maynard. "The Adequacy of Comparison Group Designs for Evaluations of Employment-related Programs." The Journal of Human Resources 22, no. 2 (1987).
MLA-Zitierstil (9. Ausg.)Fraker, Thomas M., und Rebecca Maynard. "The Adequacy of Comparison Group Designs for Evaluations of Employment-related Programs." The Journal of Human Resources, vol. 22, no. 2, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.