Soars, L., & Soars, J. (1998). New headway english course: Upper - intermediate teacher's book. New York: Oxford University Press.
Chicago Stili AlıntıSoars, Liz, ve John Soars. New Headway English Course: Upper - Intermediate Teacher's Book. New York: Oxford University Press, 1998.
MLA AlıntıSoars, Liz, ve John Soars. New Headway English Course: Upper - Intermediate Teacher's Book. New York: Oxford University Press, 1998.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..