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Lua i Stíl Chicago (17ú heag.)Gardiner, P. F., R. T. Baker, agus C. F. Lucas. Fuel Consumption at Roundabouts. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1986.
Lua MLA (9ú heag.)Gardiner, P. F., et al. Fuel Consumption at Roundabouts. Transport and Road Research Laboratory, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.