1- Robert C. Chandler (2008) White Paper Message Mapping: How to Communication During Six Stages of a Crisis. 3n Global (Attached).
2- Watch (What is message mapping in risk communications? Review this link of Vincent Covello - this is a technique that is helpful as you create your PSA. This is required. http://vimeo.com/20290221
3- Watch this video lecture from Peter Sandman, another risk communication expert in the field. http://vimeo.com/18611416