Gay, L. (1992). Educational research: Competencies for analysis and applications (4th ed.). Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGay, L.R. Educational Research: Competencies for Analysis and Applications. 4th ed. New York: Macmillan, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGay, L.R. Educational Research: Competencies for Analysis and Applications. 4th ed. Macmillan, 1992.
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