EXPERIMENTAL & QUASI-EXPERIMENTAL DESIGNS FOR GENERALIZED CAUSAL INFERENCE
SHADISH, W. R., COOK, T. D. & CAMPBELL, D. T.
EXPERIMENTAL & QUASI-EXPERIMENTAL DESIGNS FOR GENERALIZED CAUSAL INFERENCE - HOUGHTON MIFFLIN CO., BOSTON MA 02116 - 3764 2002 - 623
EXPERIMENTAL & QUASI-EXPERIMENTAL DESIGNS FOR GENERALIZED CAUSAL INFERENCE - HOUGHTON MIFFLIN CO., BOSTON MA 02116 - 3764 2002 - 623