Campbell, R. J. (1985). Administrative and operational procedures for programs for sites and services and area upgrading. World Bank.
Chicago-Zitierstil (17. Ausg.)Campbell, Ronald J. Administrative and Operational Procedures for Programs for Sites and Services and Area Upgrading. Washington, D. C: World Bank, 1985.
MLA-Zitierstil (9. Ausg.)Campbell, Ronald J. Administrative and Operational Procedures for Programs for Sites and Services and Area Upgrading. World Bank, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.