Cunningham, S., & Sarah Cunningham; Bill Bowler. (1999). New Headway Pronunciation Course: Intermediate. Oxford: Oxford University Press.
استشهاد بنمط شيكاغوCunningham, Sarah, و Sarah Cunningham; Bill Bowler. New Headway Pronunciation Course: Intermediate. Oxford: Oxford University Press, 1999.
MLA استشهادCunningham, Sarah, و Sarah Cunningham; Bill Bowler. New Headway Pronunciation Course: Intermediate. Oxford: Oxford University Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.