Soars, L., & Soars, J. (1998). New Headway: English course, Upper intermediate Student's book. Oxford University Press.
Citace podle Chicago (17th ed.)Soars, Liz, a John Soars. New Headway: English Course, Upper Intermediate Student's Book. Oxford: Oxford University Press, 1998.
Citace podle MLA (9th ed.)Soars, Liz, a John Soars. New Headway: English Course, Upper Intermediate Student's Book. Oxford University Press, 1998.
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