| title | ISBN-13 | year of publication |
|---|---|---|
| 13-Moon Diary of Natural Time, 2008/2009 | 978-90-78070-12-2 | 2008 |
| 13-Moon Diary of Natural Time 2009-2010 | 978-90-78070-20-7 | 2009 |
| 13-Moon Diary of Natural Time 2010/2011 | 978-90-78070-29-0 | 2010 |
| 13-Moon Diary of Natural Time 2011-2012 | 978-90-78070-34-4 | 2011 |
| 13-Moon Short Guide of Natural Time | 978-90-78070-30-6 | 2010 |