APA način citiranja (7. izdanje)

Keller, R., & Duenwald, K. (1998). A theory of linguistic signs. Oxford University Press.

Čikaški stil citiranja (17. izdanje)

Keller, Rudi, i Kimberley Duenwald. A Theory of Linguistic Signs. Oxford: Oxford University Press, 1998.

MLA način citiranja (9. izdanje)

Keller, Rudi, i Kimberley Duenwald. A Theory of Linguistic Signs. Oxford University Press, 1998.