Citazione Stile APA (7a Edizione)

UNDP-World Bank Water and Sanitation Program & World Bank. (1992). Improving services for the poor: A program strategy for the 1990s. World Bank.

Citazione stile Chigago Style (17a edizione)

UNDP-World Bank Water and Sanitation Program e World Bank. Improving Services for the Poor: A Program Strategy for the 1990s. Washington, D.C: World Bank, 1992.

Citatione MLA (9a ed.)

UNDP-World Bank Water and Sanitation Program e World Bank. Improving Services for the Poor: A Program Strategy for the 1990s. World Bank, 1992.