APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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