Comfort, J., & Utley, D. (1996). Effective negotiating. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoComfort, Jeremy., và Derek Utley. Effective Negotiating. Oxford: Oxford University Press, 1996.
Deismireacht MLAComfort, Jeremy., và Derek Utley. Effective Negotiating. Oxford: Oxford University Press, 1996.
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