APA (7th ed.) Citation
Soars, J., & Soars, L. (1995). Headway. Elementary: Student's Book (9th Edition.). Oxford University Press.
Chicago Style (17th ed.) Citation
Soars, John, and Liz Soars. Headway. Elementary: Student's Book. 9th Edition. Oxford: Oxford University Press, 1995.
MLA (9th ed.) Citation
Soars, John, and Liz Soars. Headway. Elementary: Student's Book. 9th Edition. Oxford University Press, 1995.
Warning: These citations may not always be 100% accurate.