Cook, T. D., & Campbell, D. T. (1979). Quasi-experimentation: Design & analysis issues for field settings. Rand McNally College Publishing.
Chicago-Zitierstil (17. Ausg.)Cook, Thomas D., und Donald Thomas Campbell. Quasi-experimentation: Design & Analysis Issues for Field Settings. Chicago: Rand McNally College Publishing, 1979.
MLA-Zitierstil (9. Ausg.)Cook, Thomas D., und Donald Thomas Campbell. Quasi-experimentation: Design & Analysis Issues for Field Settings. Rand McNally College Publishing, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.