Davies, D. G. (1967). Fresh water: The precious resource. Natural Press for the American Museum of Natural History.
Chicagoスタイル(17版)引用形式Davies, Delwyn G. Fresh Water: The Precious Resource. GArden City, N. Y: Natural Press for the American Museum of Natural History, 1967.
MLA(9版)引用形式Davies, Delwyn G. Fresh Water: The Precious Resource. Natural Press for the American Museum of Natural History, 1967.
警告: この引用は必ずしも正確ではありません.