Dear Manash, dear all,
Here is a suggestion:
Shadish, W. R., Cook, T. D., & Campbell, D. T. (2002). Experimental and quasi-experimental designs for generalized causal inference. Houghton, Mifflin and Company.
Have a nice weekend.
Silke
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Silke Tegtmeier
Prof. Dr.
Silke Tegtmeier Person
Sonderborg
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