National Association of Australian State Road Authorities. (1986). Roundabouts: A design guide. The Association.
Citazione stile Chigago Style (17a edizione)National Association of Australian State Road Authorities. Roundabouts: A Design Guide. Milson's Point, N.S.W.: The Association, 1986.
Citatione MLA (8a ed.)National Association of Australian State Road Authorities. Roundabouts: A Design Guide. The Association, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.