AASHTO. (2012). AASHTO LRFD bridge design specifications: Customary U.S. units 2012. AASHTO.
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Dyfyniad Arddull Chicago
AASHTO. AASHTO LRFD Bridge Design Specifications: Customary U.S. Units 2012. Washington: AASHTO, 2012.
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Dyfyniad MLA
AASHTO. AASHTO LRFD Bridge Design Specifications: Customary U.S. Units 2012. AASHTO, 2012.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.