APA (7th ed.) Citation

Soars John, S. L. (2009). American headway: The world´s most trusted english course (Second Edition.). Oxford.

Chicago Style (17th ed.) Citation

Soars John, Soars Liz. American Headway: The World´s Most Trusted English Course. Second Edition. Oxford, 2009.

MLA (9th ed.) Citation

Soars John, Soars Liz. American Headway: The World´s Most Trusted English Course. Second Edition. Oxford, 2009.

Warning: These citations may not always be 100% accurate.