APA-čujuhus (7. p.)
Tordo, S. (2007). Fiscal systems for hydrocarbons: Design issues. World Bank.
Chicago-čujuhus (17. p.)
Tordo, Silvana. Fiscal Systems for Hydrocarbons: Design Issues. Washington, D.C.: World Bank, 2007.
MLA-čujuhus (9. p.)
Tordo, Silvana. Fiscal Systems for Hydrocarbons: Design Issues. World Bank, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.