References
- Brunner, Karl. 1962. Die englische Sprache. Band 2. Tübingen: Niemeyer.
- Brunner, Karl. 1963. An outline of Middle English grammar. Translated by Grahame K. W. Johnston. Oxford: Blackwell.
- Brunner, Karl. 1965. Altenglische Grammatik nach der angelsächsischen Grammatik von Eduard Sievers. (3rd edn.) Tübingen: Niemeyer.
- Fisiak, Jacek. 1968. A short grammar of Middle English. Orthography, phonology and morphology. Warszawa: Państwowe Wydawnictwo Naukowe.
- Hogg, Richard M. & Robert D. Fulk. 2011. A grammar of Old English. Vol. 2: Morphology. Chichester: Wiley - Blackwell.
- Horobin, Simon & Jeremy Smith. 2002. An introduction to Middle English. Oxford: Oxford University Press.
- Mallory, James P. & Douglas Q. Adams. 2006. The Oxford introduction to Proto-Indo-European and the Proto-Indo-European world. Oxford: Oxford University Press.
- Marcus, Manfred (ed.). 2008. Innsbruck corpus of Middle English prose. Innsbruck: Innsbruck Computer Archive of Machine-Readable English Texts.
- Mossé, Fernand. 1952. A handbook of Middle English. Translated by James A. Walker. Baltimore: The John Hopkins University Press.
- Ringe, Don. 2006. From Proto-Indo-European to Proto-Germanic. Oxford: Oxford University Press.
- Wright, Joseph & Elizabeth Mary Wright. 1928. An elementary Middle English grammar. (2nd ed.) London: Oxford University Press.