MLA

Bussmann, Hadumod, Kerstin Kazzazi, and Gregory Trauth. Routledge Dictionary of Language and Linguistics. London: Routledge, 1998.

APA

Bussmann, H., Kazzazi, K., & Trauth, G. (1998). Routledge dictionary of language and linguistics. London: Routledge.

Chicago

Bussmann, Hadumod, Kerstin Kazzazi, and Gregory Trauth. Routledge Dictionary of Language and Linguistics. London: Routledge, 1998.