Richards, J. C., Hull, J., & Proctor, S. (2005). Interchange: Student's book 1 (1a. ed.). Cambridge University.
Chicago-čujuhus (17. p.)Richards, Jack C., Jonathan Hull, juo Susan Proctor. Interchange: Student's Book 1. 1a. ed. Nueva York: Cambridge University, 2005.
MLA-čujuhus (9. p.)Richards, Jack C., et al. Interchange: Student's Book 1. 1a. ed. Cambridge University, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.