If you had to pick just one?
If I had to pick one, I'd pick SPIN Selling as feverishaaron said. It's a lot more how to and broken down into steps. Selling to VITO is also step by step, but SPIN Selling approach makes more sense to me.
Re:Ask HN: Sales book recommendation?
by feverishaaron on Saturday April 18, 2009 @05:31PM
(#568764)
I would pick SPIN selling from this list, especially if you are selling custom work in an enterprise software market.
* The Sales Bible by Gitomer
* Selling to VITO by Parinello
* Lead Generation for the Complex Sale by Brian Carroll
* http://www.marketingsherpa.com/
* http://blog.startwithalead.com/weblog/
* http://www.linkedin.com/groups?home=&gid=35771&trk=a... This one is a linekdin group that sends out a good email news letter