UNWIN W R. (1983). MASTERING BUSINESS COMMUNICATION. MACMILLAN.
Chicago-čujuhus (17. p.)UNWIN W R. MASTERING BUSINESS COMMUNICATION. LONDON: MACMILLAN, 1983.
MLA-čujuhus (9. p.)UNWIN W R. MASTERING BUSINESS COMMUNICATION. MACMILLAN, 1983.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.