Cita APA (7a ed.)

Keller, R. (1994). On language change: The invisible hand in language. Routledge.

Cita Chicago Style (17a ed.)

Keller, Rudi. On Language Change: The Invisible Hand in Language. London ; New York: Routledge, 1994.

Cita MLA (9a ed.)

Keller, Rudi. On Language Change: The Invisible Hand in Language. Routledge, 1994.