Soars, L., & Soars, J. (2001). American Headway: Student book 1. New York: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, Liz, và John Soars. American Headway: Student Book 1. New York: Oxford University Press, 2001.
Deismireacht MLASoars, Liz, và John Soars. American Headway: Student Book 1. New York: Oxford University Press, 2001.
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