Soars, L., & Soars, J. (1998). New headway English course - Upper intermediate: Student's book. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, Liz, và John Soars. New Headway English Course - Upper Intermediate: Student's Book. Oxford: Oxford University Press, 1998.
Deismireacht MLASoars, Liz, và John Soars. New Headway English Course - Upper Intermediate: Student's Book. Oxford: Oxford University Press, 1998.
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