Humber, W. (1861). A complete treatise on cast and wrought iron bridge construction: Including iron foundations. E & F.N. Spon.
Čikaški stil citiranja (17. izdanje)Humber, William. A Complete Treatise on Cast and Wrought Iron Bridge Construction: Including Iron Foundations. Londres: E & F.N. Spon, 1861.
MLA način citiranja (9. izdanje)Humber, William. A Complete Treatise on Cast and Wrought Iron Bridge Construction: Including Iron Foundations. E & F.N. Spon, 1861.
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