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Prof. Dr. Ramelan, M.A.. (2003). English Phonetics . Semarang: unnes press.

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Prof. Dr. Ramelan, M.A.. English Phonetics. Semarang: unnes press, 2003. Text.

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Prof. Dr. Ramelan, M.A.. English Phonetics. Semarang: unnes press, 2003. Text.

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Prof. Dr. Ramelan, M.A.. English Phonetics. Semarang: unnes press, 2003. Print.