Du Bois, A. J. (1886). The strains in framed structures: With numerous practical applications to cranes, bridge, roof and suspension trusses, braced arches, pivot and draw spans, continuous girders, etc. (3rd ed.). J. Wiley.
Lua i Stíl Chicago (17ú heag.)Du Bois, A. Jay. The Strains in Framed Structures: With Numerous Practical Applications to Cranes, Bridge, Roof and Suspension Trusses, Braced Arches, Pivot and Draw Spans, Continuous Girders, Etc. 3rd ed. New York: J. Wiley, 1886.
Lua MLA (8ú heag.)Du Bois, A. Jay. The Strains in Framed Structures: With Numerous Practical Applications to Cranes, Bridge, Roof and Suspension Trusses, Braced Arches, Pivot and Draw Spans, Continuous Girders, Etc. 3rd ed. J. Wiley, 1886.
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