- Ardalambion –
Helge Kåre Fauskanger collected information about all languages of Arda
and made linguistic analysis of them.
He prefers Quenya of course, but his
Black Speech analysis
was taken as a base for creating LOS dialect.
- Arda Philology 1 –
Proceedings of the First International Conference on J.R.R. Tolkien's Invented Languages.
- Khuzdûl Dhe Aglâb Khazâd –
perfect russian-language source about language of Middle-Earth dwarves. (Mirror).