Gay, L. R., Mills, G. E., & Airasian, P. W. (2009). Educational research: Competencies for analysis and applications (9th ed.). Merrill/Pearson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGay, L. R., Geoffrey E. Mills, और Peter W. Airasian. Educational Research: Competencies for Analysis and Applications. 9th ed. Upper Saddle River, NJ: Merrill/Pearson, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGay, L. R., et al. Educational Research: Competencies for Analysis and Applications. 9th ed. Merrill/Pearson, 2009.
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