Československá obchodní komora. (1991). Czechoslovak heavy industry. Chamber of Commerce of Czechoslovakia.
Citazione stile Chigago Style (17a edizione)Československá obchodní komora. Czechoslovak Heavy Industry. Praha: Chamber of Commerce of Czechoslovakia, 1991.
Citatione MLA (8a ed.)Československá obchodní komora. Czechoslovak Heavy Industry. Chamber of Commerce of Czechoslovakia, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.