The Alliance of Arda
Oxonmoot Online
Michael Martinez, "What is the Literal Translation of Úlairi?" dated 15 August 2014, middle-earth.xenite.org
H. Carpenter and C. Tolkien (Eds.), The Letters of J. R. R. Tolkien. New York, NY: Houghton Mifflin (letters 26, 211, 214)
J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, book 1 ch 3
J.R.R. Tolkien, Christopher Tolkien (ed.), Treason of isengard
Shippey, Tom (2005) [1982]. The Road to Middle-Earth (Third ed.). HarperCollins. pp 242-243
J.R.R. Tolkien, Christopher Tolkien (ed.), Unfinished Tales
J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Akallabeth"
