APA (7e ed.) Bronvermelding

Hopper, P. J., & Traugott, E. C. (2003). Grammaticalization (2nd ed.). Cambridge University Press.

Chicago (17e ed.) Bronvermelding

Hopper, Paul J., en Elizabeth Closs Traugott. Grammaticalization. 2nd ed. Cambridge, UK, New York, NY: Cambridge University Press, 2003.

MLA (9e ed.) Bronvermelding

Hopper, Paul J., en Elizabeth Closs Traugott. Grammaticalization. 2nd ed. Cambridge University Press, 2003.