Cita APA

Soars, J., & Soars, L. (1993). Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press.

Citación estilo Chicago

Soars, John, y Liz Soars. Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press, 1993.

Cita MLA

Soars, John, y Liz Soars. Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press, 1993.