APA

Fisher R., I.Ury W. C., .Getting to yes: negotiating agreement without giving in. New York: Penguin Books.

Chicago

Fisher Roger, I.Ury William Coaut, .Getting to yes: negotiating agreement without giving in. New York: Penguin Books.

Harvard

Fisher R., I.Ury W. C., .Getting to yes: negotiating agreement without giving in. New York: Penguin Books.

MLA

Fisher Roger, I.Ury William Coaut, .New York: Penguin Books. .