Citação norma APA

Freeman, R. B., & Schettkat, R. (1999). The role of wage and skill differences in US-German employment differences. National Bureau of Economic Research.

Citação norma Chicago

Freeman, Richard B., and Ronald Schettkat. The Role of Wage and Skill Differences in US-German Employment Differences. Cambridge: National Bureau of Economic Research, 1999.

Citação norma MLA

Freeman, Richard B., and Ronald Schettkat. The Role of Wage and Skill Differences in US-German Employment Differences. National Bureau of Economic Research, 1999.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.