| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Amazing "Aha!" Puzzles | 978-1-4116-1330-0 | 2008 | ||
| Grundwissen Bahn. | 978-3-8085-7402-7 | 2004 | ||
| Mind Bending Super Quick Puzzles | 978-1-904797-52-4 | 2005 | Rich Garner | |
| Puzzles For The High IQ | 978-0-8069-4381-7 | 1996 | ||
| Test Your Creative Thinking: Enhance Your Lateral Thinking - Learn to Think Outside the Box | 978-0-7494-4004-6 | 2003 | ||
L. King · Leta Keens · Lotta König · Lydia Kang · Lydia Kunz
Europa-Lehrmittel · Kogan Page · Lagoon Books · Lulu.com · Sterling