Howitt, D., & Cramer, D. (1997). An introduction to statistics in psychology: A complete guide for students. Prentice Hall/Harvester Wheatsheaf.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHowitt, Dennis, और Duncan Cramer. An Introduction to Statistics in Psychology: A Complete Guide for Students. London: Prentice Hall/Harvester Wheatsheaf, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHowitt, Dennis, और Duncan Cramer. An Introduction to Statistics in Psychology: A Complete Guide for Students. Prentice Hall/Harvester Wheatsheaf, 1997.
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