Howe, J., & Sibley, B. (1995). There and back again: The map of The hobbit. HarperCollinsPublishers.
Lua i Stíl Chicago (17ú heag.)Howe, John, agus Brian Sibley. There and Back Again: The Map of The Hobbit. London: HarperCollinsPublishers, 1995.
Lua MLA (8ú heag.)Howe, John, agus Brian Sibley. There and Back Again: The Map of The Hobbit. HarperCollinsPublishers, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.