APA-referens (7:e uppl.)

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.

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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