APA (7 वां संस्करण) प्रशस्ति पत्र
Wertsch, J. V. (1993). Voices of the mind: A sociocultural approach to mediated action (1st Harvard University Press pbk. ed.). Harvard University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Wertsch, James V. Voices of the Mind: A Sociocultural Approach to Mediated Action. 1st Harvard University Press pbk. ed. Cambridge, MA: Harvard University Press, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Wertsch, James V. Voices of the Mind: A Sociocultural Approach to Mediated Action. 1st Harvard University Press pbk. ed. Harvard University Press, 1993.
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