Citazione Stile APA (7a Edizione)

Richards, J. C. (1993). Interchange: English for international communication: lab guide. 1.

Citazione stile Chigago Style (17a edizione)

Richards, Jack C. Interchange: English for International Communication: Lab Guide. 1. Cambridge, 1993.

Citatione MLA (9a ed.)

Richards, Jack C. Interchange: English for International Communication: Lab Guide. 1. 1993.