APA-čujuhus (7. p.)
Howell, D. C. (2010). Statistical methods for psychology (7th ed.). Wadsworth.
Chicago-čujuhus (17. p.)
Howell, David C. Statistical Methods for Psychology. 7th ed. Belmont, California: Wadsworth, 2010.
MLA-čujuhus (9. p.)
Howell, David C. Statistical Methods for Psychology. 7th ed. Wadsworth, 2010.
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