Petrovskibi, A. (1984). Age-group and pedagogical psychology. Progress Publishers.
Chicago Style (17th ed.) CitationPetrovskibi, A.V. Age-group and Pedagogical Psychology. Moscow: Progress Publishers, 1984.
MLA (9th ed.) CitationPetrovskibi, A.V. Age-group and Pedagogical Psychology. Progress Publishers, 1984.
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