Cita APA

Soars, L., & Soars, J. (2013). American Headway 5 (student practice): The world's most trusted English course. [Oxford]: Oxford University Press.

Chicago Style Citation

Soars, Liz, i John Soars. American Headway 5 (student Practice): The World's Most Trusted English Course. [Oxford]: Oxford University Press, 2013.

Cita MLA

Soars, Liz, i John Soars. American Headway 5 (student Practice): The World's Most Trusted English Course. [Oxford]: Oxford University Press, 2013.