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 Style (17th ed.) CitationNational Research Council (U.S.). Transportation Research Board, United States. Federal Highway Administration, American Association of State Highway and Transportation Officials, and Lee Rodegerdts. Roundabouts in the United States. Washington, D.C: Transportation Research Board, 2007.
ציטוט MLANational Research Council (U.S.). Transportation Research Board, et al. Roundabouts in the United States. Transportation Research Board, 2007.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.