(1976). AASHTO manual for bridge maintenance. American Association of State Highway and Transportation Officials.
Cita Chicago Style (17a ed.)AASHTO Manual for Bridge Maintenance. Washington, D.C: American Association of State Highway and Transportation Officials, 1976.
Cita MLA (9a ed.)AASHTO Manual for Bridge Maintenance. American Association of State Highway and Transportation Officials, 1976.
Precaución: Estas citas no son 100% exactas.