| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Barefoot Business: 3 key systems to attract more leads, win more sales and delight more customers without your business killing you | 978-1-78133-258-O (1-78133-258-4) | 2017 |
de Villiers · K. D. · P. de Villiers · P.K. · P. V. · Pieter de Villiers · Pieter Villiers