Cita APA

Hughes, R., & Hughes, R. (2005). Exploring grammar in writing: Upper-intermediate and advanced with answers. Cambridge: Cambridge University Press.

Citación estilo Chicago

Hughes, Rebecca, y Rebecca Hughes. Exploring Grammar in Writing: Upper-intermediate and Advanced With Answers. Cambridge: Cambridge University Press, 2005.

Cita MLA

Hughes, Rebecca, y Rebecca Hughes. Exploring Grammar in Writing: Upper-intermediate and Advanced With Answers. Cambridge: Cambridge University Press, 2005.