Shadish, W. R., Cook, T. D., & Campbell, D. T. (2002). Experimental and quasi-experimental designs for generalized causal inference. Wadsworth Cengage Learning.
Chicago Style (17th ed.) CitationShadish, William R., Thomas D. Cook, and Donald Thomas Campbell. Experimental and Quasi-experimental Designs for Generalized Causal Inference. Belmont, CA: Wadsworth Cengage Learning, 2002.
MLA (9th ed.) CitationShadish, William R., et al. Experimental and Quasi-experimental Designs for Generalized Causal Inference. Wadsworth Cengage Learning, 2002.
Warning: These citations may not always be 100% accurate.