| title | ISBN-13 | year of publication |
|---|---|---|
| Process Assessment and Improvement: A Practical Guide | 978-0-387-30044-3 | 2007 |
| Process Assessment and Improvement: A Practical Guide for Managers, Quality Professionals and Assessors | 978-0-387-23182-2 | 2004 |
| Process Assessment and ISO/IEC 15504: A Reference Book | 978-0-387-30048-1 | 2007 |
| Process Assessment and ISO/IEC 15504: A Reference Book | 978-0-387-23172-3 | 2004 |