Nickell, S., Layard, R., & Ashenfelter, O. (1999). Labor Market Institutions and Economic Performance. Elsevier.
Lua i Stíl Chicago (17ú heag.)Nickell, S., R. Layard, agus O. Ashenfelter. Labor Market Institutions and Economic Performance. Elsevier, 1999.
Lua MLA (9ú heag.)Nickell, S., et al. Labor Market Institutions and Economic Performance. Elsevier, 1999.
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