Cita APA (7a ed.)

Doff, A., & Jones, C. V. (1999). Language in use: Beginner. Cambridge University Press.

Cita Chicago Style (17a ed.)

Doff, Adrian, y Christopher V. Jones. Language in Use: Beginner. Cambridge: Cambridge University Press, 1999.

Cita MLA (9a ed.)

Doff, Adrian, y Christopher V. Jones. Language in Use: Beginner. Cambridge University Press, 1999.