Cita APA (7a ed.)

Richards, J. C. (1990). Interchange 1: Student´s Book. Cambridge University Press.

Cita Chicago Style (17a ed.)

Richards, Jack C. Interchange 1: Student´s Book. Cambridge, Reino Unido: Cambridge University Press, 1990.

Cita MLA (9a ed.)

Richards, Jack C. Interchange 1: Student´s Book. Cambridge University Press, 1990.