- The Ultimate Sales Machine: http://www.amazon.com/gp/product/1591842158/ref=as_li_ss_tl?... - Spin Selling: http://www.amazon.com/gp/product/0070511136/ref=as_li_ss_tl?...

and this is a very good article on the general topic:

http://blog.teamtreehouse.com/sales-lessons

How to Master the Art of Selling Anything - Tom Hopkins

Here is a URL to the book: http://www.amazon.com/How-Master-Art-Selling-Hopkins/dp/0446...

It is also in audio tape form as well.

Question Based Selling is a great intro book on how good salespeople approach sales. It has good detail in it as well. Tested Advertising Methods is a must read for learning how people respond to copy (can be applied to ppc ads, direct emails, etc).

Cashvertising is more marketing than sales, but really great read.

Sales Source on inc.com is a good read:

http://www.inc.com/author/geoffrey-james

Currently Reading -- Sales Bible By Gitomer

VALUE SELLING.