When It's Time to Get Serious About Internal Communication, Lay the Foundation with an Audit
http://www.iabc.com/cwb/archive/2007/0107/gordon.htm

Gordon, Greg
Communication World Bulletin
2007

Abstract:

While an internal communication audit is enormously valuable, many communicators don't know when one is needed, how it's done or what to do with the results. In fact, communicators who may in the end buy an audit are those who initially call for help wrestling with core communication issues. They want information and informal benchmarking, but they ask questions that foreshadow an audit.