Citazione APA

Doff, A., & Jones, C. (2004). Language in use: : classroom book. Cambridge University Press.

Stile di citazione Chicago

Doff, Adrian, e Christopher Jones. Language in Use: : Classroom Book. N.Delhi: Cambridge University Press, 2004.

Citazione MLA

Doff, Adrian, e Christopher Jones. Language in Use: : Classroom Book. Cambridge University Press, 2004.