Toens, D. (1966). Precambrian dolomite and limestone of the Northern Cape Province. Govt. Printer.
Chicagoスタイル(17版)引用形式Toens, Dennis. Precambrian Dolomite and Limestone of the Northern Cape Province. Pretoria: Govt. Printer, 1966.
MLA(8版)引用形式Toens, Dennis. Precambrian Dolomite and Limestone of the Northern Cape Province. Govt. Printer, 1966.
警告: この引用は必ずしも正確ではありません.