Glass, G. V., & Hopkins, K. D. (1996). Statistical methods in education and psychology. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Glass, Gene V., agus Kenneth D. Hopkins. Statistical Methods in Education and Psychology. Boston: Allyn and Bacon, 1996.
Lua MLA (9ú heag.)Glass, Gene V., agus Kenneth D. Hopkins. Statistical Methods in Education and Psychology. Allyn and Bacon, 1996.
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