Richards, J. C. Interchange. English for international communication. Student´s book 1 (20a ed.).
Cita Chicago (17th ed.)Richards, Jack C. Interchange. English for International Communication. Student´s Book 1. 20a ed.
Cita MLA (8th ed.)Richards, Jack C. Interchange. English for International Communication. Student´s Book 1. 20a ed.
Atenció: Aquestes cites poden no estar 100% correctes.