Lewicki,Roy J, Litterer,Joseph A, MInton,John W, & Saunders,David M. (1994). Negotiation (2nd ed.). Irwin.
Lua i Stíl Chicago (17ú heag.)Lewicki,Roy J, Litterer,Joseph A, MInton,John W, agus Saunders,David M. Negotiation. 2nd ed. Burr Ridge, Ill.: Irwin, 1994.
Lua MLA (8ú heag.)Lewicki,Roy J, et al. Negotiation. 2nd ed. Irwin, 1994.
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