| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| ROI Selling: Increasing Revenue, Profit, and Customer Loyalty through the 360 Sales Cycle | Hardcover | 978-0-7931-8799-7 (0-7931-8799-0) | 2004 | Kurt Koenig |
| ROI Selling: Increasing Revenue, Profit, and Customer Loyalty through the 360 Sales Cycle | Paperback | 978-1-60714-522-6 (1-60714-522-7) | 2004 | " |
| Why Johnny Can't Sell... and What to Do About It | Hardcover | 978-1-4195-3573-4 (1-4195-3573-0) | 2006 | Robert Kantin |
Michael Nagy · Michael Naish · Michael Nash · Michael Nauck · Michael Neaga · Michael Neuhaus · Michael Niehaus · Michael Nix · Michael Noack · Michael Nowak · Michael Nowicki · Michael Nowka · Michaela Nijs · Michal Nuk