Richards, J. C. (1994). Interchange: English for international communication : Student's book. Đà Nẵng: Nxb. Đà Nẵng.
Chicago-stil citatRichards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
MLA-referensRichards, Jack C. Interchange: English for International Communication : Student's Book. Đà Nẵng: Nxb. Đà Nẵng, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.