Although not awash with titles, there are several excellent books on the Triple Bottom Line and CSR.
Andrew Savitz's The Triple Bottom Line outlines the principles behind the triple bottom line and features some strong case studies to illustrate it in action.
Also well worth a read is The Triple Bottom Line - Does it all add up? which takes a critical look at the subject.
The Triple Bottom Line
The Triple Bottom Line - Does it all add up?
Corporate Social Responsibility
Trust Matters
Corporate Reputation, the Brand, and the Bottom Line