Citazione Stile APA (7a Edizione)

Richards, J. C. (1994). Interchange: English for international communication: lab guide. 3.

Citazione stile Chigago Style (17a edizione)

Richards, Jack C. Interchange: English for International Communication: Lab Guide. 3. Cambridge, 1994.

Citatione MLA (9a ed.)

Richards, Jack C. Interchange: English for International Communication: Lab Guide. 3. 1994.