Ury William. (1991). Getting Past No: Negotiation With difficult People. Random House Business Books.
Chicago-Zitierstil (17. Ausg.)Ury William. Getting Past No: Negotiation With Difficult People. London: Random House Business Books, 1991.
MLA-Zitierstil (9. Ausg.)Ury William. Getting Past No: Negotiation With Difficult People. Random House Business Books, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.