- The Ultimate Sales Machine: http://www.amazon.com/gp/product/1591842158/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=1591842158&linkCode=as2

- The Ultimate Sales Machine: http://www.amazon.com/gp/product/1591842158/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=1591842158&linkCode=as2&tag=webscrilla-20 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?ie=UTF8&camp=1789&creative=390957&creativeASIN=0070511136&linkCode=as2&tag=webscrilla-20 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 http://blog.teamtreehouse.com/sales-lessons