United States. Bureau of Economic Analysis. (1974). Area economic projections, 1990: States and regions, BEA economic areas, SMSA's, non-SMSA portions of BEA economic areas. The Bureau.
Citazione stile Chigago Style (17a edizione)United States. Bureau of Economic Analysis. Area Economic Projections, 1990: States and Regions, BEA Economic Areas, SMSA's, Non-SMSA Portions of BEA Economic Areas. [Washington]: The Bureau, 1974.
Citatione MLA (9a ed.)United States. Bureau of Economic Analysis. Area Economic Projections, 1990: States and Regions, BEA Economic Areas, SMSA's, Non-SMSA Portions of BEA Economic Areas. The Bureau, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.