Cita APA

(1989). Headway workbook: Advanced. Oxford: Oxford Univ. Press.

Chicago Style Citation

Headway Workbook: Advanced. Oxford: Oxford Univ. Press, 1989.

Cita MLA

Headway Workbook: Advanced. Oxford: Oxford Univ. Press, 1989.

Atenció: Aquestes cites poden no estar 100% correctes.