Não informado. (2009). Records of the Geological Survey of Tanganyika. Government Printer.
Chicagoスタイル(17版)引用形式Não informado. Records of the Geological Survey of Tanganyika. Dar es Salaam, Tanzania: Government Printer, 2009.
MLA(8版)引用形式Não informado. Records of the Geological Survey of Tanganyika. Government Printer, 2009.
警告: この引用は必ずしも正確ではありません.