Levin, J., & Fox, J. A. (1991). Elementary statistics in social research (5th ed.). Harper Collins Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevin, Jack, और James Alan Fox. Elementary Statistics in Social Research. 5th ed. New York: Harper Collins Publishers, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLevin, Jack, और James Alan Fox. Elementary Statistics in Social Research. 5th ed. Harper Collins Publishers, 1991.
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