APA (7th ed.) Citation
Soars, J., & Soars, L. (2003). New Headway English Course: Pre-Intermediate. Workbook with key (10. vyd.). Oxford University Press.
Chicago Style (17th ed.) Citation
Soars, John, and Liz Soars. New Headway English Course: Pre-Intermediate. Workbook with Key. 10. vyd. Oxford: Oxford University Press, 2003.
MLA (9th ed.) Citation
Soars, John, and Liz Soars. New Headway English Course: Pre-Intermediate. Workbook with Key. 10. vyd. Oxford University Press, 2003.
Warning: These citations may not always be 100% accurate.