Johannesson, I. (1967). Effects of praise and blame. Acta Universtitatis Stockholmiensis : Stockholms studies in educational psychology 13.
Čikaški stil citiranjaJohannesson, Ingvar. "Effects of Praise and Blame." Acta Universtitatis Stockholmiensis : Stockholms Studies in Educational Psychology 13 1967.
MLA način citiranjaJohannesson, Ingvar. "Effects of Praise and Blame." Acta Universtitatis Stockholmiensis : Stockholms Studies in Educational Psychology 13 1967.
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