From Tolkien Gateway
- Minas Tirith = "Tower of the Guard"
- J.R.R. Tolkien, "The Rivers and Beacon-hills of Gondor" (edited by Carl F. Hostetter), in Vinyar Tengwar, Number 42, July 2001, p. 11
- Wayne G. Hammond and Christina Scull (eds), The Lord of the Rings: A Reader's Companion, p. 41
- J.R.R. Tolkien; Humphrey Carpenter, Christopher Tolkien (eds.), The Letters of J.R.R. Tolkien, Letter 131, (undated, written late 1951), p. 158
- J.R.R. Tolkien, Christopher Tolkien (ed.), The Lost Road and Other Writings, Part Three: "The Etymologies", p. 394