Nierenberg, G. I. (1984). The art of negotiating (1st Pocket Books printing.). Pocket Books.
Cita Chicago Style (17a ed.)Nierenberg, Gerard I. The Art of Negotiating. 1st Pocket Books printing. New York [etc.]: Pocket Books, 1984.
Cita MLA (9a ed.)Nierenberg, Gerard I. The Art of Negotiating. 1st Pocket Books printing. Pocket Books, 1984.
Precaución: Estas citas no son 100% exactas.