Παραπομπή APA

Cook,Thomas D, & Reichardt,Charles S. (1979). Qualitative and quantitative methods in evaluation research. Sage.

Παραπομπή Chicago Style

Cook,Thomas D, και Reichardt,Charles S. Qualitative and Quantitative Methods in Evaluation Research. London: Sage, 1979.

Παραπομπή MLA

Cook,Thomas D, και Reichardt,Charles S. Qualitative and Quantitative Methods in Evaluation Research. Sage, 1979.