Fisher,Roger. (1991). Getting to yes: Negotiating agreement without giving in (NA.). RH Business Books.
Chicago-viite (17. p.)Fisher,Roger. Getting to Yes: Negotiating Agreement Without Giving in. NA. US: RH Business Books, 1991.
MLA-viite (9. p.)Fisher,Roger. Getting to Yes: Negotiating Agreement Without Giving in. NA. RH Business Books, 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.