Tolkien Languages

Languages of Tolkien's Middle-earth by Noel, Ruth S. (1980)

Kent State University Press

Splintered Light: Logos and Language in Tolkien's World

Betascript Publishing

Valarin: Fictional Language, J. R. R. Tolkien, Languages of Arda, Tolkien's Legendarium, Middle- Earth

Tolkien GB

The Peoples of Middle-earth: Book 12 (The History of Middle-earth)

Tolkien GB

The War of the Jewels: Book 11 (The History of Middle-earth)

Cambridge University Press

Tolkien and the Mystery of Literary Creation    

Tolkien GB

Beowulf: A Translation and Commentary, Together with Sellic Spell

Tolkien GB

Sauron Defeated: J.R.R. Tolkien: Book 9 (The History of Middle-earth)

Tolkien GB

The Monsters and the Critics: And Other Essays. J.R.R. Tolkien

Casals

J. R. R. Tolkien. El mago de las palabras (Biografía joven)