Citação norma APA

Soars, L., & Soars, J. (1996). New Headway English Course: Intermediate Workbook : with key (4th impression.). Oxford University Press.

Citação norma Chicago

Soars, Liz, and John Soars. New Headway English Course: Intermediate Workbook : With Key. 4th impression. Oxford: Oxford University Press, 1996.

Citação norma MLA

Soars, Liz, and John Soars. New Headway English Course: Intermediate Workbook : With Key. 4th impression. Oxford University Press, 1996.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.