Richards, J. C. (1991). Interchange 2: Student's Book. Cambridge University Press.
Chicago-čujuhus (17. p.)Richards, Jack C. Interchange 2: Student's Book. Cambridge, Reino Unido: Cambridge University Press, 1991.
MLA-čujuhus (9. p.)Richards, Jack C. Interchange 2: Student's Book. Cambridge University Press, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.