American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures, & American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. (1997). Guide specifications for design of pedestrian bridges. Washington, D.C.: American Association of State Highway and Transportation Officials.
Citación estilo ChicagoAmerican Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures, y American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. Guide Specifications for Design of Pedestrian Bridges. Washington, D.C.: American Association of State Highway and Transportation Officials, 1997.
Cita MLAAmerican Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures, y American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures. Guide Specifications for Design of Pedestrian Bridges. Washington, D.C.: American Association of State Highway and Transportation Officials, 1997.