PHP研究所 (PHPkenkyuujo/kenkyuusho) · Sasquatch Books
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Ichiro on Ichiro: Conversations with Narumi Komatsu | 978-1-57061-431-6 (1-57061-431-8) | 2004 |
| Naze ano toki akiramenakatta noka | 978-4-569-80494-1 (4-569-80494-2) | 2012 |