Creswell, J. W., & Plano Clark, V. L. Designing and conducting mixed methods research (2a ed.).
Lua i Stíl Chicago (17ú heag.)Creswell, John W., agus Vicki L. Plano Clark. Designing and Conducting Mixed Methods Research. 2a ed.
Lua MLA (8ú heag.)Creswell, John W., agus Vicki L. Plano Clark. Designing and Conducting Mixed Methods Research. 2a ed.
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