The design of traffic signs /
Department of the Environment, Transport and the Regions ... [et al.].
APA Citation
Great Britain. Dept. of the Environment, T. and the Regions. (1997). The design of traffic signs. London: [Her Majesty's Stationery Office.
MLA Citation
Great Britain. Dept. of the Environment, Transport and the Regions. The Design of Traffic Signs. London: [Her Majesty's Stationery Office, 1997.
Warning: These citations may not always be complete (especially for serials).