Layard, R., & Nickell, S. (1999). The Labour Market. Macmillan.
Cita Chicago (17th ed.)Layard, R., i S. Nickell. The Labour Market. Macmillan, 1999.
Cita MLA (9th ed.)Layard, R., i S. Nickell. The Labour Market. Macmillan, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.