Brook, P. J., & Irwin, T. (2002). Infrastructure for poor people: Public policy for private provision. World Bank.
Lua i Stíl Chicago (17ú heag.)Brook, Penelope J., agus Timothy Irwin. Infrastructure for Poor People: Public Policy for Private Provision. Washington, DC: World Bank, 2002.
Lua MLA (9ú heag.)Brook, Penelope J., agus Timothy Irwin. Infrastructure for Poor People: Public Policy for Private Provision. World Bank, 2002.