Friedman, J. A., & Lowenstern, M. R. (1962). Labor law and practice in Costa Rica. United States Department of Labor, Bureau of Labor Statistics.
Lua i Stíl Chicago (17ú heag.)Friedman, Jesse A., agus Martha R. Lowenstern. Labor Law and Practice in Costa Rica. [Washington, D.C.]: United States Department of Labor, Bureau of Labor Statistics, 1962.
Lua MLA (8ú heag.)Friedman, Jesse A., agus Martha R. Lowenstern. Labor Law and Practice in Costa Rica. United States Department of Labor, Bureau of Labor Statistics, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.