Não informado. (2019). The Water Wheel. Water Research Commission.
Chicagoスタイル(17版)引用形式Não informado. The Water Wheel. Pretoria, Africa do Sul: Water Research Commission, 2019.
MLA(8版)引用形式Não informado. The Water Wheel. Water Research Commission, 2019.
警告: この引用は必ずしも正確ではありません.