Soars, L., & Soars, J. (1996). New headway: English course intermediate student's book (1a. ed., 6a. reimp.). Oxford.
Cita Chicago Style (17a ed.)Soars, Liz, y John Soars. New Headway: English Course Intermediate Student's Book. 1a. ed., 6a. reimp. New York: Oxford, 1996.
Cita MLA (9a ed.)Soars, Liz, y John Soars. New Headway: English Course Intermediate Student's Book. 1a. ed., 6a. reimp. Oxford, 1996.
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