Cita APA (7a ed.)

American Association of State Highway and Transportation Officials. (2011). A policy on geometric design of highways and streets (6th ed.). AASHTO.

Cita Chicago Style (17a ed.)

American Association of State Highway and Transportation Officials. A Policy on Geometric Design of Highways and Streets. 6th ed. Washington: AASHTO, 2011.

Cita MLA (8a ed.)

American Association of State Highway and Transportation Officials. A Policy on Geometric Design of Highways and Streets. 6th ed. AASHTO, 2011.