APA
American Association of State Highway, and Transportation Officials A., . (2002). AASHTO provisional standards. Washington DC: American Association of State Highway.
Chicago
American Association of State Highway, and Transportation Officials AASHTO, . 2002. AASHTO provisional standards. Washington DC: American Association of State Highway.
Harvard
American Association of State Highway, and Transportation Officials A., . (2002). AASHTO provisional standards. Washington DC: American Association of State Highway.
MLA
American Association of State Highway, and Transportation Officials AASHTO, . AASHTO provisional standards. Washington DC: American Association of State Highway. 2002.