The qualitative-quantitative debateCharles S. Reichardt, Sharon F. Rallis · First published 1994Open the Tome
Evaluation studies review annualWilliam R. Shadish, Charles S. Reichardt · First published 1987Open the Tome
Qualitative and quantitative methods in evaluation researchThomas D. Cook, Charles S. Reichardt · First published 1979Open the Tome
