Tolkien, J. R. R. (1978). Sir Gawain and the Green Knight ; Pearl ; and Sir Orfeo. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Tolkien, J. R. R. Sir Gawain and the Green Knight ; Pearl ; and Sir Orfeo. Boston, MA: Houghton Mifflin, 1978.
Lua MLA (8ú heag.)Tolkien, J. R. R. Sir Gawain and the Green Knight ; Pearl ; and Sir Orfeo. Houghton Mifflin, 1978.
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