Morgan, D. L. (2014). Integrating qualitative and quantitative methods: A pragmatic approach. SAGE Publications, Inc.
Lua i Stíl Chicago (17ú heag.)Morgan, David L. Integrating Qualitative and Quantitative Methods: A Pragmatic Approach. Los Angeles, Calif: SAGE Publications, Inc, 2014.
Lua MLA (9ú heag.)Morgan, David L. Integrating Qualitative and Quantitative Methods: A Pragmatic Approach. SAGE Publications, Inc, 2014.
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