APA (7th ed.) Citation

Keller, R. (1994). On language change: The invisible hand in language (1. publ.). Routledge.

Chicago Style (17th ed.) Citation

Keller, Rudi. On Language Change: The Invisible Hand in Language. 1. publ. London u.a: Routledge, 1994.

MLA (9th ed.) Citation

Keller, Rudi. On Language Change: The Invisible Hand in Language. 1. publ. Routledge, 1994.