J. G. · James John Garth Wilkinson · John G. · John S. Garth
| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Tolkien and the Great War: The Threshold of Middle-earth | 978-0-618-57481-0 | 2005 | |
| Tolkien and the Great War: The Threshold of Middle-earth | 978-0-00-711953-0 | 2004 | |
| Tolkien and the Great War: The Threshold of Middle-Earth | 978-0-00-711952-3 | 2003 | |
| Tolkien and the Great War: The Threshold of Middle-Earth | 978-0-618-33129-1 | 2003 | |
| Tolkien e la grande guerra. La soglia della Terra di Mezzo | 978-88-211-8570-0 | 2007 | |
| Tolkien und der Erste Weltkrieg: Das Tor zu Mittelerde | 978-3-608-96059-4 | 2014 |
HOUGHTON MIFFLIN · HarperCollins · Klett-Cotta · Marietti