Creswell, J. W. (2015). A concise introduction to mixed methods research. SAGE Publication.
Lua i Stíl Chicago (17ú heag.)Creswell, John W. A Concise Introduction to Mixed Methods Research. Los Angeles: SAGE Publication, 2015.
Lua MLA (8ú heag.)Creswell, John W. A Concise Introduction to Mixed Methods Research. SAGE Publication, 2015.
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