APA (7th ed.) Citation

Frith, B. A., & Barbour, I. A. (1993). Goods vehicle surveys at four WIM pre-selection sites: 1990/1991. Transport Research Laboratory.

Chicago Style (17th ed.) Citation

Frith, B. A., and Ian A. Barbour. Goods Vehicle Surveys at Four WIM Pre-selection Sites: 1990/1991. Crowthorne: Transport Research Laboratory, 1993.

MLA (9th ed.) Citation

Frith, B. A., and Ian A. Barbour. Goods Vehicle Surveys at Four WIM Pre-selection Sites: 1990/1991. Transport Research Laboratory, 1993.