Παραπομπή σε μορφή APA (7η εκδ.)

Doff, A., & Jones, C. (1991). Language in use: A pre-intermediate course : classroom book. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Doff, Adrian, και Christopher Jones. Language in Use: A Pre-intermediate Course : Classroom Book. Cambridge: Cambridge University Press, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Doff, Adrian, και Christopher Jones. Language in Use: A Pre-intermediate Course : Classroom Book. Cambridge University Press, 1991.