Campbell, D. T. (1963). Experimental and quasi-experimental designs for research. Rand McNally College.
Citación estilo ChicagoCampbell, Donald T. Experimental and Quasi-experimental Designs for Research. Chicago: Rand McNally College, 1963.
Cita MLACampbell, Donald T. Experimental and Quasi-experimental Designs for Research. Rand McNally College, 1963.
Warning: These citations may not always be 100% accurate.