APA-Zitierstil (7. Ausg.)

Freeman, R. B., & Needels, K. (1991). Skill differentials in Canada in an era of rising labor market inequality. National Bureau of Economic Research.

Chicago-Zitierstil (17. Ausg.)

Freeman, Richard B., und Karen Needels. Skill Differentials in Canada in an Era of Rising Labor Market Inequality. Cambridge, Mass: National Bureau of Economic Research, 1991.

MLA-Zitierstil (9. Ausg.)

Freeman, Richard B., und Karen Needels. Skill Differentials in Canada in an Era of Rising Labor Market Inequality. National Bureau of Economic Research, 1991.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.