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Lua i Stíl Chicago (17ú heag.)Radl, Jonas. Retirement Timing and Social Stratification: A Comparative Study of Labor Market Exit and Age Norms in Western Europe. London: Versita, 2013.
Lua MLA (9ú heag.)Radl, Jonas. Retirement Timing and Social Stratification: A Comparative Study of Labor Market Exit and Age Norms in Western Europe. Versita, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.