| Encyclopedia Britannica | Online edition. |
| Encyclopedia of Language and Linguistics | R.E. Asher |
| Middle English Compendium | University of Michigan. Includes a Middle English Dictionary, a HyperBibliography of Middle English prose and verse, based on the MED bibliographies, and a Corpus of Middle English Prose and Verse, as well as links to an associated network of electronic resources. |
| English Dictionaries, Thesauri |