- DIXON-KENNEDY, Mike, A Companion to Arthurian and Celtic Myths and Legends, Stroud, Sutton, 2004
- DOOLEY, Gerry, The Zorro Television Companion : A Critical Appreciation, Jefferson (NC), McFarland, 2005
- FISHER, Jude, The Return of the King Visual Companion : The Official Illustrated Movie Companion (The Lord of The Rings), New York, Houhgton Mifflin, 2003
- FORD, Paul F., Pocket Companion to Narnia : A Guide to the Magical World of C.S. Lewis, San Francisco, HarperSanfrancisco, 2005
- GOSLING, Sharon, Stargate Atlantis, The Official Companion Season 1, London, Titan Books, 2005
- HAMMOND, Wayne G. & Christina SCULL, The Lord of the Rings : A Reader’s Companion, Boston, Houghton Mifflin, 2005
- HUNT, Peter (ed.), International Companion Encyclopedia of Children’s Literature, New York, Routledge, 2005
- HOGLE, Jerrold E. (ed.) & Jessica BOMARITO (Project Editor), Gothic Literature : a Gale Critical Companion, Detroit, Thomson/Gale
- JAMES, Edward (dir.), The Cambridge Companion to Science Fiction, Cambridge, Cambridge University Press, (Cambridge Companions to Literature), 2003
- HAYES, K. Stoddard, Xena Warrior Princess (The Complete Illustrated Companion), London, Titan, 2003
- JONES, Stephen & Kim NEWMAN, Horror : Another 100 Best Books, New York, Carroll & Graf, 2005
- KRONZEK, Allan & Elizabeth, Le Livre de l’apprenti-sorcier, Paris, l’Archipel, 2004, Ed. or. : The Sorcerer’s Companion : A Guide to the Magical World of Harry Potter, New
York, Broadway Books, 2004
- MONDA, Andrea, Gli anelli della fantasia : un viaggio ai confini dell’Universo di Tolkien, Milano, Frassinelli, (Saggistica Frassinelli), 2004
- MORRIS, Tee & Valerie GRISWOLD-FORD (eds.), The Fantasy Writer’s Companion, Calgary, Dragon Moon Press, (The Complete Guide to Writing Fantasy, vo. 2), 2004
- SIMPSON, Paul (ed.), The Rough Guide to The Lord of The Rings, London, Rough Guides, 2003
- SEED, David (ed.), A Companion to Science Fiction, Malden (Ma.), Blackwell, (Blackwell’s Companions to Literature and Culture, 34), 2005
- TYLER, J. E. A., The Complete Tolkien Companion, New York, St. Martin’s Press, 2004
- WAINWRIGHT, Edmund, Tolkien’s Mythology for England : A Middle-Earth Companion, Hockwold-cum-Wilton, Anglo-Saxon Books, 2004
- WIENER, Gary (dir.), Readings on J. K. Rowling, San Diego (CA), Greenhaven Press, (The Greenhaven Press Literary Companions to Contemporary Authors), 2004