Jack C.Richards. (1995). Interchange: English for international communication. Nxb Trẻ.
Chicago Style aipamenaJack C.Richards. Interchange: English for International Communication. Nxb Trẻ, 1995.
MLA aipamenaJack C.Richards. Interchange: English for International Communication. Nxb Trẻ, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.