Healey, J. F. (2012). Statistics: A tool for social research (Ninth edition.). Wadsworth/Cengage Learning.
Chicago Style (17. basım) AtıfHealey, Joseph F. Statistics: A Tool for Social Research. Ninth edition. Australia: Wadsworth/Cengage Learning, 2012.
MLA (9th ed.) AtıfHealey, Joseph F. Statistics: A Tool for Social Research. Ninth edition. Wadsworth/Cengage Learning, 2012.
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