Blackburn, R. R., & Gilbert, D. T. (1995). Photographic enforcement of traffic laws. National Academy Press.
Lua i Stíl Chicago (17ú heag.)Blackburn, R. R., agus Daniel T. Gilbert. Photographic Enforcement of Traffic Laws. Washington, D.C: National Academy Press, 1995.
Lua MLA (9ú heag.)Blackburn, R. R., agus Daniel T. Gilbert. Photographic Enforcement of Traffic Laws. National Academy Press, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.