Fisher, R. (1991). Getting to Yes. Randm House Business Books.
Cita Chicago (17th ed.)Fisher, Roger. Getting to Yes. London: Randm House Business Books, 1991.
Cita MLA (9th ed.)Fisher, Roger. Getting to Yes. Randm House Business Books, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.