| CJRT | Christopher Tolkien (J.R.R. Tolkien's son and the editor of HoMe) |
| FA | Fourth Age |
| Fonstad | Karen Wynn Fonstad, The Complete Atlas of Middle-Earth, revised edition (1991), cited by page number. |
| Foster | Robert Foster, The Complete Guide to Middle-Earth (1978). |
| HoMe | The History of Middle-earth cited by volume (1-12) and page number. |
| Hobb | The Hobbit cited by chapter only. There are too many different editions to cite by page number. |
| Lett | The Letters of J.R.R. Tolkien cited by letter number. |
| LotR | The Lord of the Rings cited either by book (1-6) and chapter, or by Appendix. There are too many different editions to cite by page number. |
| SA | Second Age |
| Silm | The Silmarillion cited by page number. |
| TA | Third Age |
| UT | Unfinished Tales cited by page number. |
| YS | Years of the Sun, i.e. years of the First Age after the rising of the Sun. |
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