Não informado. (2001). Annual report on the mineral resources of the URSS. Geological Committee.
Chicagoスタイル(17版)引用形式Não informado. Annual Report on the Mineral Resources of the URSS. Leningrad, Rússia: Geological Committee, 2001.
MLA(8版)引用形式Não informado. Annual Report on the Mineral Resources of the URSS. Geological Committee, 2001.
警告: この引用は必ずしも正確ではありません.