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Sociolinguistics : the study of societies language. (2010). Yogyakarta: Graha Ilmu.

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Sociolinguistics : the study of societies language. . Yogyakarta: Graha Ilmu, 2010. Text.

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Sociolinguistics : the study of societies language. . Yogyakarta: Graha Ilmu, 2010. Text.

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Sociolinguistics : the study of societies language. Yogyakarta: Graha Ilmu, 2010. Print.