Cita APA

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

Citación estilo Chicago

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

Cita MLA

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