.Tyworth, J. E., .Cavinato, J. L., & Langley, C. J. (1987). Traffic management: Planning, operations, and control. .Addison-Wesley Pub. Co.
Lua i Stíl Chicago (17ú heag.).Tyworth, John E., Joseph L. .Cavinato, agus C. John Langley. Traffic Management: Planning, Operations, and Control. Reading, Mass: .Addison-Wesley Pub. Co, 1987.
Lua MLA (9ú heag.).Tyworth, John E., et al. Traffic Management: Planning, Operations, and Control. .Addison-Wesley Pub. Co, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.