Lewicki, R. J., Barry, B., & Saunders, D. M. (2015). Negotiation (Seventh edition.). McGraw-Hill.
Cita Chicago (17th ed.)Lewicki, Roy J., Bruce Barry, i David M. Saunders. Negotiation. Seventh edition. Boston: McGraw-Hill, 2015.
Cita MLA (9th ed.)Lewicki, Roy J., et al. Negotiation. Seventh edition. McGraw-Hill, 2015.
Atenció: Aquestes cites poden no estar 100% correctes.