APA (7th ed.) Citation

English, J., & Card, R. (1991). Butterworths police law (3rd ed.). Butterworths.

Chicago Style (17th ed.) Citation

English, Jack, and Richard Card. Butterworths Police Law. 3rd ed. London: Butterworths, 1991.

MLA (9th ed.) Citation

English, Jack, and Richard Card. Butterworths Police Law. 3rd ed. Butterworths, 1991.

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