APA (7th ed.) Citation

Layard, P. R. G., & Nickell, S. J. (1985). The causes of British unemployment.

Chicago Style (17th ed.) Citation

Layard, Peter R. G., and Stephen J. Nickell. The Causes of British Unemployment. London, 1985.

MLA (9th ed.) Citation

Layard, Peter R. G., and Stephen J. Nickell. The Causes of British Unemployment. 1985.