What are the best books about B2B Social Media Marketing?

[Sonika11Mehra]

What are the best books about B2B Social Media Marketing?

[luffy268]

The Zen of Social Media Marketing by Shama Kabani
Perspectives on social Media Marketing by Stephanie Agresta and B. Bonin Bough
Social Media 101 by Chris Brogan
And I'll mention mine as well:
Understanding the social in social media by Taylor Ellwood

[aceamerican]

Nice posting

[incomecracker]

Good to Great by Jim Collins.
To Sell Is Human.
The B2B Executive Playbook.
There is No B2B or B2C: It’s Human to Human.
Thinking, Fast and Slow.
B2B Social Media Book