Levin, J., & Fox, J. A. (2010). Elementary statistics in social research (11th ed.). Pearson Education South Asia Pte.
Chicago-viite (17. p.)Levin, Jack, ja James Alan Fox. Elementary Statistics in Social Research. 11th ed. Jurong, Singapore: Pearson Education South Asia Pte, 2010.
MLA-viite (9. p.)Levin, Jack, ja James Alan Fox. Elementary Statistics in Social Research. 11th ed. Pearson Education South Asia Pte, 2010.
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