Soars, J., & Soars, L. (1991). Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoSoars, John, và Liz Soars. Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press, 1991.
MLA CitationSoars, John, và Liz Soars. Headway: Pre-Intermediate : Student's Book. Oxford: Oxford University Press, 1991.
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