Healey, J. F. (2015). Statistics: A tool for social research (Tenth edition.). Cengage Learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHealey, Joseph F. Statistics: A Tool for Social Research. Tenth edition. Stamford, Connecticut: Cengage Learning, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHealey, Joseph F. Statistics: A Tool for Social Research. Tenth edition. Cengage Learning, 2015.
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