William Ury

Getting to Yes

The Power of A Positive No

Getting Past No

Possible

Getting to Yes with Yourself

Getting to Yes with Yourself

Getting to Yes

Wissen was ich will und erfolgreich verhandeln.

Obtenga el sí consigo mismo

Sim, é possível: Sobreviver e prosperar em uma era de conflitos (Unabridged)

Die Kunst, Nein zu sagen

Die Kunst, Nein zu sagen - die unschlagbare Methode für schwierige Verhandlungen: Vom Autor des Harvard-Konzepts