Werts, J. E. (1954). Statistical methods in educational and psycohological research. Appleton-Century-Crofts.
Chicago-viite (17. p.)Werts, James E. Statistical Methods in Educational and Psycohological Research. New York: Appleton-Century-Crofts, 1954.
MLA-viite (9. p.)Werts, James E. Statistical Methods in Educational and Psycohological Research. Appleton-Century-Crofts, 1954.
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