[antiform]

If I could choose one book on sales, it would be

Non-Manipulative Selling by Tony Alessandra.

This is a diamond in the rough among sales books. Many other books on sales, at least in the few that I've read and others I've skimmed, seem to be full of subtle and not-so-subtle psychological manipulation that always gave me an uneasy feeling in my gut once the conversation ended. This book is different. However, even if you believe in the "hard sell" philosophy, you should read this, since at the very least, you learn many tips to prevent negotiations from getting hostile.