O'Flaherty, C. A., Boyle, A., & Brennan, M. J. (2002). Highways: The location, design, construction and maintenance of road pavements (4th ed.). Butterworth-Heinemann.
Lua i Stíl Chicago (17ú heag.)O'Flaherty, C. A., A. Boyle, agus M. J. Brennan. Highways: The Location, Design, Construction and Maintenance of Road Pavements. 4th ed. Oxford: Butterworth-Heinemann, 2002.
Lua MLA (9ú heag.)O'Flaherty, C. A., et al. Highways: The Location, Design, Construction and Maintenance of Road Pavements. 4th ed. Butterworth-Heinemann, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.