Boyce , T. (2006). Successful contract negotiation. Viva.
Chicago-čujuhus (17. p.)Boyce , Tim. Successful Contract Negotiation. New Delhi: Viva, 2006.
MLA-čujuhus (9. p.)Boyce , Tim. Successful Contract Negotiation. Viva, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.