Gaag, J. v. d. (1991). Trends in social indicators and social sector financing. Population and Human Resources Deppartment, World Bank.
Chicago-Zitierstil (17. Ausg.)Gaag, Jacques van der. Trends in Social Indicators and Social Sector Financing. Washington, D.C: Population and Human Resources Deppartment, World Bank, 1991.
MLA-Zitierstil (9. Ausg.)Gaag, Jacques van der. Trends in Social Indicators and Social Sector Financing. Population and Human Resources Deppartment, World Bank, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.