U.S. Bureau of Labor Statistics. Pricing of commodities and services. s.n.
Citazione stile Chigago Style (17a edizione)U.S. Bureau of Labor Statistics. Pricing of Commodities and Services. Washington: s.n.
Citatione MLA (9a ed.)U.S. Bureau of Labor Statistics. Pricing of Commodities and Services. s.n.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.