Gneuss , Helmut. 1955. Lehnbildungen und Lehnbedeutungen im Altenglischen. Berlin: Erich Schmidt Verlag.
2.
Nielsen , Hans Frede. 1985. Old English and the Continental Germanic Languages: A Survey of Morphological and Phonological Interrelations. 2d rev. ed.Innsbruck, Austria: Innsbrucker Beiträge zur Sprachwissenschaft.
3.
Nielsen , Hans Frede. 1989. The Germanic Languages: Origins and Early Dialectal Interrelations. Tuscaloosa: University of Alabama Press.
4.
Wellek , René. 1955-92. History of Modern Criticism: 1750-1950.8 vols. New Haven and London: Yale University Press.