| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Bounce: Use the power of resilience to live the life you want | 978-0-273-72994-5 | 2009 | Gill Hasson | |
| Brilliant Positive Thinking: Transform Your Outlook and Face the Future With Confidence and Optimism | 978-0-273-75932-4 | 2011 | ||
| Freundlich, aber bestimmt: Wie Sie sich beruflich und privat durchsetzen | 978-3-423-34758-7 | 2013 | Gill Hasson | |
| How to be Assertive In Any Situation, 2/e | 978-93-325-4094-1 | 2015 | ||
| How to be Assertive In Any Situation | 978-0-273-78522-4 | 2013 | ||
| How to be assertive in any situation | 978-0-273-73849-7 | 2010 | Gill Hasson | |
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