Frey, B. B. (2022). The SAGE encyclopedia of research design (Second edition.). SAGE Reference.
Chicago Style (17. basım) AtıfFrey, Bruce B. The SAGE Encyclopedia of Research Design. Second edition. Los Angeles, California: SAGE Reference, 2022.
MLA (9th ed.) AtıfFrey, Bruce B. The SAGE Encyclopedia of Research Design. Second edition. SAGE Reference, 2022.
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