Mertens, D. M. (2005). Research and evaluation in education and psychology: Integrating diversity with quantitative, qualitative, and mixed methods (2nd ed.). Sage Publications.
Lua i Stíl Chicago (17ú heag.)Mertens, Donna M. Research and Evaluation in Education and Psychology: Integrating Diversity with Quantitative, Qualitative, and Mixed Methods. 2nd ed. Thousand Oaks, Calif.: Sage Publications, 2005.
Lua MLA (8ú heag.)Mertens, Donna M. Research and Evaluation in Education and Psychology: Integrating Diversity with Quantitative, Qualitative, and Mixed Methods. 2nd ed. Sage Publications, 2005.
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