APA (7th ed.) Citation

Crystal, D. (1992). An encyclopedic dictionary of language and languages / David Crystal. Blackwell.

Chicago Style (17th ed.) Citation

Crystal, David. An Encyclopedic Dictionary of Language and Languages / David Crystal. Oxford: Blackwell, 1992.

MLA (9th ed.) Citation

Crystal, David. An Encyclopedic Dictionary of Language and Languages / David Crystal. Blackwell, 1992.

Warning: These citations may not always be 100% accurate.