Citazione Stile APA (7a Edizione)

Willis, D., & Willis, J. (2007). Doing Task-based Teaching (1a. ed.). Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Willis, Dave, e Jane Willis. Doing Task-based Teaching. 1a. ed. Nueva York: Oxford University Press, 2007.

Citatione MLA (9a ed.)

Willis, Dave, e Jane Willis. Doing Task-based Teaching. 1a. ed. Oxford University Press, 2007.