Campbell, Lyle 1998. Historical linguistics : An Introduction. Edinburgh : Edinburgh University Press. (396 sider)
Hopper, Paul J., & Elizabeth Closs Traugott 1993. Grammaticalization. Cambridge: Cambridge University Press. (256 sider)
Kompendium:
Denison, Norman 1997. Language Change in Progress: Variation as it Happens. s. 65–80 i Florian Coulmas (ed.): The Handbook of Sociolinguistics. Oxford: Blackwell. (16 sider)
Bright, William 1997. Social Factors in Language Change. s. 81–91 i Florian Coulmas (ed.): The Handbook of Sociolinguistics. Oxford: Blackwell. (10 sider)
Labov, William 1972. The Social Motivation of a Sound Change. S. 1 – 42, i William Labov: Sociolinguistic Patterns. Philadelphia: University of Pennsylvania Press. (43 sider)