Cunningham, S., & Bowler, B. (1999). New headway pronunciation: Intermediate student's practice book. Oxford University Press.
Chicago Style (17. basım) AtıfCunningham, Sarah, ve Bill Bowler. New Headway Pronunciation: Intermediate Student's Practice Book. Oxford: Oxford University Press, 1999.
MLA (9th ed.) AtıfCunningham, Sarah, ve Bill Bowler. New Headway Pronunciation: Intermediate Student's Practice Book. Oxford University Press, 1999.
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