Essential books for a Student on a Technical Field

 Hey there!

I've started to purchase some books that doesn't concern my field of study (computer science) to improve my interpersonnal skills and my "self-improvement skills". I've purchased "THe platinum rule", because I think that adapting my style of communication will help me in my future job. 

I want to become an highly effective Software Engineer with good communication skills, so do you have any recommandation of books that I should purchase?

I've already found some interesting books (most of them because of Mark's recommandation), tell me what you think on thoses as well!

• Getting things done (I need to improve my effectiveness)
• Winning Em' Over (I need to be more persuasive)
• Presentation Zen