Cita APA

Hopper, P. J., & Traugott, E. C. (1993). Grammaticalization. New York, N.Y.: Cambridge University Press.

Citación estilo Chicago

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

Cita MLA

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