APA

Shadish W. R., Cook T. D. & Campbell D. T. (2002). Experimental and quasi-experimental designs for generalized causal inference. Boston: Houghton Mifflin.

Chicago

Shadish William R, Cook Thomas D and Campbell Donald T. 2002. Experimental and quasi-experimental designs for generalized causal inference. Boston: Houghton Mifflin.

Harvard

Shadish W. R., Cook T. D. and Campbell D. T. (2002). Experimental and quasi-experimental designs for generalized causal inference. Boston: Houghton Mifflin.

MLA

Shadish William R, Cook Thomas D and Campbell Donald T. Experimental and quasi-experimental designs for generalized causal inference. Boston: Houghton Mifflin. 2002.