| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Go better to the game - the framework of one <Gamification> 9 ISBN: 4140815361 | 978-4-14-O81536-6 (4-14-O81536-1) | 2012 |
Kazuo Fujita · Kazuya Fujita · Kazuya Fukuda · Keiichi Fukuda · Keiko Fukuda · Koichi Fujita · Koji Fujita · Koji Fukuda · Kouki Fukuda