APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Hopper, Paul J., and Elizabeth Closs Traugott. Grammaticalization. 2. ed. Cambridge [u.a.]: Cambridge Univ. Press, 2003.

MLA (9th ed.) Citation

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