Fisher, R. (1991). Getting to Yes (2nd.). Pearson education.
Cita Chicago Style (17a ed.)Fisher, Roger. Getting to Yes. 2nd. New Delhi: Pearson education, 1991.
Cita MLA (9a ed.)Fisher, Roger. Getting to Yes. 2nd. Pearson education, 1991.
Precaución: Estas citas no son 100% exactas.