Sources

[UT p. xxx] : The Unfinished Tales.
[L p. xxx] : The Letters, éditions HarperCollins.
[VTxx p. xx] : Vinyar Tengwar.
[PExx p. xx] : Parma Eldalamberon.

Série The History of Middle-earth (HoMe), aux éditions HarperCollins :

[Ety p. xxx] : chapitre Etymologies issu de The Lost Road And Other Writings.
[Q&E p. xxx] : chapitre Quendi and Eldar issu de The War of the Jewels.
[PMe p. xxx] : Peoples of Middle-earth, volume 12.