Doff, A., & Jones, C. (1994). Language in use: Intermediate : classroom book [Băng Casset]. Cambridge: Cambridge U. P..
Chicago Style aipamenaDoff, Adrian, và Christopher Jones. Language in Use: Intermediate : Classroom Book [Băng Casset]. Cambridge: Cambridge U. P., 1994.
MLA aipamenaDoff, Adrian, và Christopher Jones. Language in Use: Intermediate : Classroom Book [Băng Casset]. Cambridge: Cambridge U. P., 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.