Sales Cybernetics by Brian Adams

Sales Cybernetics is the best book on the psychology of selling. It will open the way to new riches in your life, personally and financially.
A personal message from the publisher, Melvin Powers...

It isn't often That a publisher can honestly say that the book he is introducing is the best one on a particular topic that he has ever read. This is one of those rare occasions. Sale Cybernetics is the best book that I've read on the psychology of selling. And I've read a lot of them.