Center for Creative Leadership 
Interpersonal Savvy: Building and Maintaining Solid Working Relationships (Portuguese for Europe) [PDF ebook] 

Having interpersonal skills will allow you to motivate, inspire, and successfully lead others, as well as further your own career development. This guidebook will show you how, through self-awareness and strategic implementation of behaviors, you can utilize interpersonal savvy to make the most out of negative situations, develop and lead others, and create a positive working environment despite daily challenges and hardships.