Soars, L., & Liz & John Soars with Jop Devoy. (1998). New Headway English Course: Upper-intermediate (Workbook with key). Oxford: Oxford University Press.
Citação norma ChicagoSoars, Liz, e Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
Citação norma MLASoars, Liz, e Liz & John Soars with Jop Devoy. New Headway English Course: Upper-intermediate (Workbook With Key). Oxford: Oxford University Press, 1998.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.