Summers, L. H. (1992). Investing in all the people. Office of the Vice President, Development Economics, World Bank.
Citazione stile Chigago Style (17a edizione)Summers, Lawrence H. Investing in All the People. Washington, D.C: Office of the Vice President, Development Economics, World Bank, 1992.
Citatione MLA (9a ed.)Summers, Lawrence H. Investing in All the People. Office of the Vice President, Development Economics, World Bank, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.