APA Format
Crystal, David; Crystal, David. (1994).
The Cambridge encyclopedia / edited by David Crystal
. Cambridge :: Cambridge University Press,.
MLA Format
Crystal, David; Crystal, David.
The Cambridge encyclopedia / edited by David Crystal
. Cambridge :: Cambridge University Press,, 1994
Chicago Format
Crystal, David; Crystal, David. The Cambridge encyclopedia / edited by David Crystal. Cambridge :: Cambridge University Press,, 1994.