Não informado. (2001). Annual report on the mineral resources of the URSS. Geological Committee.
Style de citation Chicago (17e éd.)Não informado. Annual Report on the Mineral Resources of the URSS. Leningrad, Rússia: Geological Committee, 2001.
Style de citation MLA (8e éd.)Não informado. Annual Report on the Mineral Resources of the URSS. Geological Committee, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.