APA Style

Hopper, Paul J., Traugott, Elizabeth Closs. (1993). Grammaticalization . New York: Cambridge University Press.

Chicago Style

Hopper, Paul J., Traugott, Elizabeth Closs. Grammaticalization. New York: Cambridge University Press, 1993. Text.

MLA Style

Hopper, Paul J., Traugott, Elizabeth Closs. Grammaticalization. New York: Cambridge University Press, 1993. Text.

Turabian Style

Hopper, Paul J., Traugott, Elizabeth Closs. Grammaticalization. New York: Cambridge University Press, 1993. Print.