Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Shadish, William R., Thomas D. Cook, i Donald Thomas Campbell. Experimental and Quasi-experimental Designs for Generalized Causal Inference. Boston: Houghton Mifflin, 2002.

Cita MLA (9th ed.)

Shadish, William R., et al. Experimental and Quasi-experimental Designs for Generalized Causal Inference. Houghton Mifflin, 2002.