References
An Anthology of Beowulf Criticism (Edited by L.E. Nicholson) Notre Dame: University of Notre Dame Press, 1963.
Foster, R. The Complete Guide to Middle-Earth. From "The Hobbit" to "The Silmarillion". - New York: Ballantine Books, 1979.
Helms, R. Tolkien's World. - Boston: Houghton Mifflin Company. 1974.
Kocher, P. Master of Middle-Earth. J.R.R.Tolkien's Fiction. - New York: Ballantine Books, 1977.
Tolkien, J.R.R. Tree and Leaf. - Boston: Houghton Mifflin Company, 1965.
Tolkien, J.R.R. The Fellowship of the Ring. - New York: Ballantine Books, 1966 I
Tolkien, J.R.R. The Return of the King. - New York: Ballantine Books, 1966 III.
Cater, B. More and More People are Getting the J.R.R. Tolkien Habit. - Los Angeles Times Calendar, April 9, 1972.