Cita APA

Alonso Valenzuela, S. I. |. S. A. American Headway: The world's most trusted english courseStudent practice (2a. ed.). [s.l]: OXFORD University Press.

Citación estilo Chicago

Alonso Valenzuela, Samaria Ilú | Sevilla Amador. American Headway: The World's Most Trusted English CourseStudent Practice. 2a. ed. [s.l]: OXFORD University Press.

Cita MLA

Alonso Valenzuela, Samaria Ilú | Sevilla Amador. American Headway: The World's Most Trusted English CourseStudent Practice. 2a. ed. [s.l]: OXFORD University Press.