APA (7e ed.) Bronvermelding

Friedman, J. A., & Lowenstern, M. R. (1962). Labor law and practice in Costa Rica. United States Department of Labor, Bureau of Labor Statistics.

Chicago (17e ed.) Bronvermelding

Friedman, Jesse A., en Martha R. Lowenstern. Labor Law and Practice in Costa Rica. [Washington, D.C.]: United States Department of Labor, Bureau of Labor Statistics, 1962.

MLA (8e ed.) Bronvermelding

Friedman, Jesse A., en Martha R. Lowenstern. Labor Law and Practice in Costa Rica. United States Department of Labor, Bureau of Labor Statistics, 1962.