Hartiy Peter. (2002). business Comunication. Routledge.
Chicago-čujuhus (17. p.)Hartiy Peter. Business Comunication. london: Routledge, 2002.
MLA-čujuhus (9. p.)Hartiy Peter. Business Comunication. Routledge, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.