APA

Soars L., Soars J. & Falla T. (2003). New Headway Advanced. : Oxford University Press.

Chicago

Soars L, Soars J and Falla T. 2003. New Headway Advanced. : Oxford University Press.

Harvard

Soars L., Soars J. and Falla T. (2003). New Headway Advanced. : Oxford University Press.

MLA

Soars L, Soars J and Falla T. New Headway Advanced. : Oxford University Press. 2003.