APA Style

Crystal, David. (1985). What is linguistics ? (4). Australia: Edward Arnold.

Chicago Style

Crystal, David. What is linguistics ?. 4 Australia: Edward Arnold, 1985. Text.

MLA Style

Crystal, David. What is linguistics ?. 4 Australia: Edward Arnold, 1985. Text.

Turabian Style

Crystal, David. What is linguistics ?. 4 Australia: Edward Arnold, 1985. Print.