APA (7th ed.) Citation

Greenhalgh, C. A., Layard, R., & Oswald, A. J. (1983). The causes of unemployment. Clarendon Press.

Chicago Style (17th ed.) Citation

Greenhalgh, C. A., Richard Layard, and Andrew J. Oswald. The Causes of Unemployment. Oxford: Clarendon Press, 1983.

MLA (9th ed.) Citation

Greenhalgh, C. A., et al. The Causes of Unemployment. Clarendon Press, 1983.