Noel, R. S. (1980). The languages of Tolkien's Middle-earth. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Noel, Ruth S. The Languages of Tolkien's Middle-earth. Boston: Houghton Mifflin, 1980.
Lua MLA (8ú heag.)Noel, Ruth S. The Languages of Tolkien's Middle-earth. Houghton Mifflin, 1980.
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