Creswell, J. W., & Plano Clark, V. L. (2011). Designing and conducting mixed methods research (2nd ed.). SAGE.
Lua i Stíl Chicago (17ú heag.)Creswell, John W., agus Vicki L. Plano Clark. Designing and Conducting Mixed Methods Research. 2nd ed. Los Angeles: SAGE, 2011.
Lua MLA (9ú heag.)Creswell, John W., agus Vicki L. Plano Clark. Designing and Conducting Mixed Methods Research. 2nd ed. SAGE, 2011.
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