Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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