Gray, W. S. (1944). Reinforced concrete water towers, bunkers, silos and gantries (2nd ed.). Concrete Publications.
Chicagoスタイル(17版)引用形式Gray, W. S. Reinforced Concrete Water Towers, Bunkers, Silos and Gantries. 2nd ed. London: Concrete Publications, 1944.
MLA(8版)引用形式Gray, W. S. Reinforced Concrete Water Towers, Bunkers, Silos and Gantries. 2nd ed. Concrete Publications, 1944.
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