Tough, J. (1973). Focus on meaning: Talking to some purpose with young children. Allen and Unwin.
শিকাগো স্টাইলে সাইটেশনTough, Joan. Focus on Meaning: Talking to Some Purpose with Young Children. London: Allen and Unwin, 1973.
এমএলএ সাইটেশনTough, Joan. Focus on Meaning: Talking to Some Purpose with Young Children. Allen and Unwin, 1973.
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