APA (7th ed.) Citation

Walker, C. D. (1999). Safety aspects of road edge drainage features. Transport Research Laboratory.

Chicago Style (17th ed.) Citation

Walker, C. D. Safety Aspects of Road Edge Drainage Features. Crowthorne, Berkshire: Transport Research Laboratory, 1999.

MLA (9th ed.) Citation

Walker, C. D. Safety Aspects of Road Edge Drainage Features. Transport Research Laboratory, 1999.