Vygotskiy L. S. Predistoriya pismennoy rechi = [Prehistory of Written Speech] // Umstvennoye razvitiye detey v protsesse obucheniya: Sbornik statey / L. S. Vygotskiy. — M.–L.: Gosudarstvennoye uchebno-pedagogicheskoye izdatelstvo, 1935. — S. 73—95. — URL: https://psychlib.ru/inc/absid.php?absid=79914.
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