Cita APA (7a ed.)

Fox, J., Willis, J., & Willis, D. (1996). Challenge and change in language teaching. Heinemann,.

Cita Chicago Style (17a ed.)

Fox, Jeremy, Jane Willis, y Dave Willis. Challenge and Change in Language Teaching. Oxford.: Heinemann,, 1996.

Cita MLA (8a ed.)

Fox, Jeremy, et al. Challenge and Change in Language Teaching. Heinemann,, 1996.