| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Cost Reduction Strategies | 978-602-02-4270-5 (602-02-4270-6) | 2014 |
| Office Power & Office Politics | 978-602-02-3152-5 (602-02-3152-6) | 2014 |
| POWER SALES - Rahasia Sukses Memimpin Tim Penjualan | 978-602-02-6759-3 (602-02-6759-8) | 2015 |