APA (7th ed.) Citation

English, J., & Card, R. (1985). Butterworth's police law. Butterworths.

Chicago Style (17th ed.) Citation

English, Jack, and Richard Card. Butterworth's Police Law. London: Butterworths, 1985.

MLA (8th ed.) Citation

English, Jack, and Richard Card. Butterworth's Police Law. Butterworths, 1985.