Christensen, L. B. (2001). Experimental methodology (Eight edition.). Allyn and Bacon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChristensen, Larry B. Experimental Methodology. Eight edition. Boston: Allyn and Bacon, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChristensen, Larry B. Experimental Methodology. Eight edition. Allyn and Bacon, 2001.
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