Wallace,J P, & Sherret,A. (1973). Estimation of product attributes and their importances. Springer - Verlag.
Čikaški stil citiranjaWallace,J P, i Sherret,A. Estimation of Product Attributes and Their Importances. Berlin: Springer - Verlag, 1973.
MLA način citiranjaWallace,J P, i Sherret,A. Estimation of Product Attributes and Their Importances. Springer - Verlag, 1973.
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