Tom Peters, "The Project 50" is a good overview of the client services and includes selling is an essential part of any project. http://www.amazon.com/exec/obidos/ASIN/037...103-0928498-6218261

Guy Kawasaki, "Rules of Revolutionaries" is a good primer for keeping lean and moving forward. http://www.amazon.com/exec/obidos/ASIN/088...103-0928498-6218261

On a knowlegde management front, Davenport and Prusak, "Working Knowledge".
http://www.amazon.com/exec/obidos/ASIN/157...103-0928498-6218261

And also on the KM and internal knowledge transfer (which amazingly applies to external information sharing) O'Dell and Grayson, "If Only We Knew What We Know".
http://www.amazon.com/exec/obidos/ASIN/068...103-0928498-6218261