Gulliksen, H., & Messick, S. (1960). Psychological scaling: Theory and applications. New York: John Wiley & Sons.
Παραπομπή Chicago StyleGulliksen, Harold, and Samuel Messick. Psychological Scaling: Theory and Applications. New York: John Wiley & Sons, 1960.
Παραπομπή MLAGulliksen, Harold, and Samuel Messick. Psychological Scaling: Theory and Applications. New York: John Wiley & Sons, 1960.
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