Gaya APA

Ury, W. et al (1991). Getting to Yes : Negotiating Agreement Without Giving In (2nd ed.). New York: Houghton Mifflin Company.

Gaya MLA

Ury, William. et al. "Getting to Yes : Negotiating Agreement Without Giving In". 2nd ed. New York: Houghton Mifflin Company, 1991. .