Fisher, R. (2011). Getting to Yes (1st.). RH Business Books.
Cita Chicago (17th ed.)Fisher, Roger. Getting to Yes. 1st. RH Business Books, 2011.
Cita MLA (9th ed.)Fisher, Roger. Getting to Yes. 1st. RH Business Books, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.