Gaya APA

Shapiro, D. (2017). Negotiating the Nonnegotiable: How to Resolve Your Most Emotionally Charged Conflicts . New York: Penguin Books.

Gaya MLA

Shapiro, Daniel. "Negotiating the Nonnegotiable: How to Resolve Your Most Emotionally Charged Conflicts". New York: Penguin Books, 2017. book.