Campbell, D. T. (1963). Experimental and quasi-experimental designs for research. Rand McNally College.
Citace podle Chicago (17th ed.)Campbell, Donald T. Experimental and Quasi-experimental Designs for Research. Chicago: Rand McNally College, 1963.
Citace podle MLA (9th ed.)Campbell, Donald T. Experimental and Quasi-experimental Designs for Research. Rand McNally College, 1963.
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