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