| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Professional Product Owner: Leveraging Scrum as a Competitive Advantage | 978-O-13-468647-9 (O-13-468647-O) | 2018 | Don McGreal |
R.J. · Ralf Jasny · Ralph Jackson · Ralph Jessen · Ralph Maria Jocham