Spence, W. P. (1998). Construction methods, materials, and techniques. Delmar Pub.
Čikaški stil citiranja (17. izdanje)Spence, William Perkins. Construction Methods, Materials, and Techniques. Albany, N.Y: Delmar Pub, 1998.
MLA način citiranja (9. izdanje)Spence, William Perkins. Construction Methods, Materials, and Techniques. Delmar Pub, 1998.
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