Add and vote for the best books for salespeople and sales managers that sell complex, high cost, or high risk products or services to other businesses. For the purpose of this list, a complex sale is generally defined by meeting most (but not necessarily all) of these traits:

- sale is usually in excess of $100,000 and up
- there are usually multiple stakeholders and decision makers involved
- primary decision maker will often be a C-suite (or other high management in very large companies)
- sale is usually done in person, not through web meetings
- sales person is often responsible for their own lead generation