Citazione Stile APA (7a Edizione)

National Research Council (U.S.). Transportation Research Board, United States. Federal Highway Administration, American Association of State Highway and Transportation Officials, & Rodegerdts, L. (2007). Roundabouts in the United States. Transportation Research Board.

Citazione stile Chigago Style (17a edizione)

National Research Council (U.S.). Transportation Research Board, United States. Federal Highway Administration, American Association of State Highway and Transportation Officials, e Lee Rodegerdts. Roundabouts in the United States. Washington, D.C: Transportation Research Board, 2007.

Citatione MLA (9a ed.)

National Research Council (U.S.). Transportation Research Board, et al. Roundabouts in the United States. Transportation Research Board, 2007.