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Thomas, Erik R.. (2011). Sociophonetics : an introduction . London: Palgrave Macmillan.

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Thomas, Erik R.. Sociophonetics : an introduction. London: Palgrave Macmillan, 2011. Text.

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Thomas, Erik R.. Sociophonetics : an introduction. London: Palgrave Macmillan, 2011. Text.

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Thomas, Erik R.. Sociophonetics : an introduction. London: Palgrave Macmillan, 2011. Print.