Soars, J., & Soars, L. (1994). Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press.
Παραπομπή Chicago StyleSoars, John, και Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
Παραπομπή MLASoars, John, και Liz Soars. Headway Pre-Intermediate: Student"s Book, Workbook. Oxford: Oxford University Press, 1994.
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