E.H. · Eltjo Haselhoff · H.H.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Het Raadsel van de Graancirkels. Feiten, analysen, hypothesen | 978-90-202-8162-0 (90-202-8162-3) | 1998 |
| The Deepening Complexity of Crop Circles: Scientific Research and Urban Legends | 978-0-285-63625-5 (0-285-63625-1) | 2001 |
| The Deepening Complexity of Crop Circles: Scientific Research and Urban Legends | 978-1-58394-046-4 (1-58394-046-4) | 2001 |