101 Ways to Improve Your Communication Skills Instantly.
Jo Condrill & Bennie Bough.  Goalminds, Inc., 1998.
Includes tips that lead to better results in communication skills, attitudes and behavior.
 

Resolving Conflicts at Work: A Complete Guide for Everyone on the Job.
Kenneth Cloke & Joan Goldsmith.  Wiley, John & Sons, 2001.
A guide to creating productive working relationships to take the place of conflicts, Shows how to clear up miscommunications, conflicts, and misunderstandings at work.
 

Dealing with Difficult People: How You Can Come out on Top in Personality Conflicts.
Charles J. Keating.  Paulist Press, 1984.
Explores theoretical and practical causes and contexts of conflicts between people, as well as solutions for handling them.
 

Coping with Difficult Bosses: Dealing with the Ogres, Wafflers, Know-It-Alls, and Paranoids That Run the Office.
Robert Barmson. DIANE Publishing Co., 1997.
Explains the bosses who are too controlling, too temperamental, unpredictable, indecisive, or just plain annoying and provides advice how to deal with these bosses.
 

Please Understand Me II: Temperament Character Intelligence
David Keirsey.  Prometheus Books, 1998.
Includes The Keirsey Four-Types Sorter, a new short questionnaire that identifies one's basic temperament and explains each character.
 

You Just Don't Understand: Women and Men in Conversation. 
Deborah Tannen.  Harper Trade, 2001. |
Focuses on the sense of frustration that men and women feel when trying to communicate with members of the opposite sex.
 

Genderspeak: Men, Women, and the Gentle Art of Verbal Self Defense. 
Suzette Haden Elgin.  Wiley, John & Sons, 1993.
Helps readers understand what to do when communication breaks down between the genders.  |
 

Difficult Conversations: How to Discuss what Matters Most
Douglas F. Stone, Bruce Patton, & Sheila Heen.  Penguin USA, 2000
Step-by-step approach for how to handle difficult conversations with less stress and more success.

The 7 Habits of Highly Effective People
Stephen R. Covey.  Simon & Schuster Trade, 1990
Describes seven principles of life management with theories and practical examples.

Another popular self-diagnostic and descriptive of one's learning preferences.

Allan A. Glatthorn. Corwin Press, 1998.

http://www.geocities.com/dan_atteberry/MYERS-BRIGGS_KEIRSEY.html
Offers free MBTI (Myers-Briggs Test Instrument) test (not an official version) and has many links to other resources related to personality

http://www.learnerassociates.net/dissthes/
A good thesis/dissertation guide in English, Spanish and Portuguese.  The site also has many related links, including a link to an essay regarding how to be a good advisor.

http://research.unc.edu/rs
Research Support at the University of North Carolina at Chapel Hill