AASHTO & American Association of State Highway and Transportation Officials. (2011). AASHTO guide specifications for LRFD seismic bridge design (2nd edition.). AASHTO.
Chicago Style (17th ed.) ZitazioaAASHTO eta American Association of State Highway and Transportation Officials. AASHTO Guide Specifications for LRFD Seismic Bridge Design. 2nd edition. Washington, D.C: AASHTO, 2011.
MLA (9th ed.) ZitazioaAASHTO eta American Association of State Highway and Transportation Officials. AASHTO Guide Specifications for LRFD Seismic Bridge Design. 2nd edition. AASHTO, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.