Citazione Stile APA (7a Edizione)

Littlejohn, A., & Hicks, D. (1998). Cambridge english for schools: Teacher's book four. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Littlejohn, Andrew, e Diana Hicks. Cambridge English for Schools: Teacher's Book Four. Cambridge: Cambridge University Press, 1998.

Citatione MLA (9a ed.)

Littlejohn, Andrew, e Diana Hicks. Cambridge English for Schools: Teacher's Book Four. Cambridge University Press, 1998.