Campbell, Lyle. 2001. What’s Wrong with Grammaticalization? Language Sciences23:113-161.
2.
Darnell, Michael, Edith Moravcsik, Fredrick Newmeyer, Michael Noonan, and Kathleen Wheatley, eds. 1998. Functionalism and Formalism in Linguistics. Amsterdam: Benjamins.
3.
Ebrey, Patricia Buckley. 1996. The Cambridge Illustrated History of China. Cambridge, UK: Cambridge University Press.
4.
Newmeyer, Frederick J. 1998. Language Form and Language Function. Cambridge, MA: MIT Press.
