Cita APA (7th ed.)

Richards, J. C. New Interchange: English for international communication. Student's book 1A (3a ed.).

Cita Chicago (17th ed.)

Richards, Jack C. New Interchange: English for International Communication. Student's Book 1A. 3a ed.

Cita MLA (8th ed.)

Richards, Jack C. New Interchange: English for International Communication. Student's Book 1A. 3a ed.