United States. Federal Highway Administration. Traffic Systems Division. (1974). Preferential treatment for high occupancy vehicles. The Division ; Available through the National Technical Information Service.
芝加哥风格引文United States. Federal Highway Administration. Traffic Systems Division. Preferential Treatment for High Occupancy Vehicles. Washington, D.C. : Springfield, Va.: The Division ; Available through the National Technical Information Service, 1974.
MLA引文United States. Federal Highway Administration. Traffic Systems Division. Preferential Treatment for High Occupancy Vehicles. The Division ; Available through the National Technical Information Service, 1974.
警告：这些引文格式不一定是100％准确.