Mertens, D. M. (1998). Research methods in education and psychology: Integrating diversity with quantitative & qualitative approaches. Sage.
Chicago-Zitierstil (17. Ausg.)Mertens, Donna M. Research Methods in Education and Psychology: Integrating Diversity with Quantitative & Qualitative Approaches. Thousand Oaks [u.a.]: Sage, 1998.
MLA-Zitierstil (9. Ausg.)Mertens, Donna M. Research Methods in Education and Psychology: Integrating Diversity with Quantitative & Qualitative Approaches. Sage, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.