Cita APA

Soars, J., & Soars, L. (2013). American Headway 2 (student practice): The world's most trusted English course. [Oxford]: Oxford University Press.

Chicago Style Citation

Soars, John, i Liz Soars. American Headway 2 (student Practice): The World's Most Trusted English Course. [Oxford]: Oxford University Press, 2013.

Cita MLA

Soars, John, i Liz Soars. American Headway 2 (student Practice): The World's Most Trusted English Course. [Oxford]: Oxford University Press, 2013.