Dealing with Difficult People (HBR Emotional Intelligence Series)
Getting Along: How to Work with Anyone (Even Difficult People)
Having Difficult Conversations (HBR Emotional Intelligence Series)
HBR Guide to Dealing with Conflict (HBR Guide Series)
HBR's 10 Must Reads on Strengthening Your Soft Skills (with bonus article "You Don't Need Just One Leadership Voice--You Need Many" by Amy Jen Su)
Writing, Presenting, and Communicating with Confidence (HBR Work Smart Series)
HBR Guides to Emotional Intelligence at Work Collection (5 Books) (HBR Guide Series)
Bosses, Coworkers, and Building Great Work Relationships (HBR Work Smart Series)
HBR Guide to Building Your Business Case (HBR Guide Series)
The HBR Work Smart Boxed Set (6 Books) (HBR Work Smart Series)