Experimental and Quasi Experimental Designs for Generalized Causal Inference by Shadish, William R., Cook, Thomas D., Campbell, Donald T. [Cengage,2001] (Paperback) 2nd Edition

Experimental and Quasi Experimental Designs for Generalized Causal Inference by Shadish, William R., Cook, Thomas D., Campbell, Donald T. . Cengage, 2001 2nd Edition.