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