Kuravsky L. S. , Malykh S. B. , Kravchuk T. E. , Kuznetsova I. V. , Semago N. Ya. : Methods of classification in psychological diagnostics 06'1 p.157
Kuravsky L. S. , Malykh S. B. , Kravchuk T. E. , Bolycheva K. A. :
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