| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Bezsennosc: Pozbadz sie problemu i spij jak dziecko | 978-83-246-1674-9 (83-246-1674-8) | ||
| The Insomnia Answer: A Personalized Program for Identifying and Overcoming the Three Types of Insomnia | 978-0-399-53230-6 (0-399-53230-7) | 2006 | Art Spielman |
| The Insomnia Answer: A Personalized Program for Identifying and Overcoming the Three Types ofInsomnia | 978-0-399-53297-9 (0-399-53297-8) | 2006 | " |