| nombre | tipo de medio | fecha | Autor | Idioma | tipo | Ubicación narrativa | Título |
|---|---|---|---|---|---|---|---|
| The Facts on File Companion to Pre-1600 British Poetry | 1600 | Jonathan Evans | |||||
| J. R. R. Tolkien Encyclopedia: Scholarship and Critical Assessment | 2007 | Jonathan Evans | |||||
| J. R. R. Tolkien and His Literary Resonances | 2000 | Jonathan Evans | |||||
| The Encyclopedia of Medieval Folklore | 2000 | Jonathan Evans | |||||
| Medieval Scandinavia: An Encyclopedia | 1993 | Jonathan Evans |