Not sure what you mean? I am not a policeman so I can't make references specific that would be training for a cop.

If you just want books that teach negotiation there are a few good ones out there.

Getting to Yes was published in 1981 and its a classic.. still in print after 30 years...

There are others, specifically for dealing with difficult people and such... But GTY is a great start for negotiation books.

Last edited by Allen A; 04/06/10 04:29 AM.