WEST, M. (1973). Improve your english. Longman.
Chicago-čujuhus (17. p.)WEST, Michael. Improve Your English. London: Longman, 1973.
MLA-čujuhus (9. p.)WEST, Michael. Improve Your English. Longman, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.