Textbooks for negotiation in western countries
When I started using English, it was technical English. Now I have to do things other than that, like I have to negotiate with business partner's executives in the US and France. I have never learned their way to negotiate or discuss, so I feel quite vulnerable. Could you recommend me some textbooks or web sites to help basic learners like me? Written in plain English is preferable. Right now sometimes I speak to them, but mostly write them.
Thanks for your help!