Keppel, G. (1973). Design and analysis: A researcher's handbook. Prentice-Hall.
Chicago Style aipamenaKeppel, Geoffrey. Design and Analysis: A Researcher's Handbook. Englewood Cliffs, N.J: Prentice-Hall, 1973.
MLA aipamenaKeppel, Geoffrey. Design and Analysis: A Researcher's Handbook. Prentice-Hall, 1973.
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