Shapiro, D. (2017). Negotiating the nonnegotiable: How to resolve your most emotionally charged conflicts (Expanded edition.). Penguin Books.
Chicago-Zitierstil (17. Ausg.)Shapiro, Daniel. Negotiating the Nonnegotiable: How to Resolve Your Most Emotionally Charged Conflicts. Expanded edition. New York, New York: Penguin Books, 2017.
MLA-Zitierstil (9. Ausg.)Shapiro, Daniel. Negotiating the Nonnegotiable: How to Resolve Your Most Emotionally Charged Conflicts. Expanded edition. Penguin Books, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.