Soars, J., & Soars, L. (2009). New Headway: Upper-Intermediate : Teacher's Book (3a. ed.). Oxford University Press.
Chicago Style (17. basım) AtıfSoars, John, ve Liz Soars. New Headway: Upper-Intermediate : Teacher's Book. 3a. ed. New York: Oxford University Press, 2009.
MLA (9th ed.) AtıfSoars, John, ve Liz Soars. New Headway: Upper-Intermediate : Teacher's Book. 3a. ed. Oxford University Press, 2009.
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