Cita APA

John & Liz Soars. (1989). Headway: Workbook : upper-intermediate. Oxford: Oxford University Press.

Citación estilo Chicago

John & Liz Soars. Headway: Workbook : Upper-intermediate. Oxford: Oxford University Press, 1989.

Cita MLA

John & Liz Soars. Headway: Workbook : Upper-intermediate. Oxford: Oxford University Press, 1989.

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