Lewicki,Roy J, Bruce Barry, & David M. Saunders. (2016). Essentials of Negotiation (sixth.). McGraw Hill International Edition.
Lua i Stíl Chicago (17ú heag.)Lewicki,Roy J, Bruce Barry, agus David M. Saunders. Essentials of Negotiation. sixth. New York: McGraw Hill International Edition, 2016.
Lua MLA (9ú heag.)Lewicki,Roy J, et al. Essentials of Negotiation. sixth. McGraw Hill International Edition, 2016.
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