Richards, J. C. (1994). Interchange: English for international communication : Student's book. Đà Nẵng: Nxb. Đà Nẵng.
Trích dẫn kiểu ChicagoRichards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
ציטוט MLARichards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.