Crucial Conversations: Tools for Talking When Stakes are High by Kerry Patterson, Joseph Grenny, Ron McMillan, and Al Switzler. (McGraw-Hill, 2002)
Power Phrases: The Perfect Words to Say It Right and Get the Results You Want by Meryl Runion. (Power Potentials Publishing, 2002)
Getting to Yes: Negotiating Agreement Without Giving In by Roger Fisher, Bruce M. Patton, and William L. Ury. (Houghtin Mifflin, 1992)
The Power of a Positive No: Save The Deal Save The Relationship and Still Say No by William Ury. (Bantam, 2007)
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