Cramer, D. (1998). Fundamental statistics for social research: Step by step calculations and computer techniques using. Routledge.
Chicago-viite (17. p.)Cramer, Duncan. Fundamental Statistics for Social Research: Step by Step Calculations and Computer Techniques Using. London: Routledge, 1998.
MLA-viite (9. p.)Cramer, Duncan. Fundamental Statistics for Social Research: Step by Step Calculations and Computer Techniques Using. Routledge, 1998.
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