Cita APA

Soars, L., Soars, J., & Wheeldon, S. (2005). New headway: Upper - Intermediate : Workbook with key. Oxford: Oxford Univ. Press.

Citación estilo Chicago

Soars, Liz, John Soars, y Sylvia Wheeldon. New Headway: Upper - Intermediate : Workbook With Key. Oxford: Oxford Univ. Press, 2005.

Cita MLA

Soars, Liz, John Soars, y Sylvia Wheeldon. New Headway: Upper - Intermediate : Workbook With Key. Oxford: Oxford Univ. Press, 2005.