APA (7th ed.) Citation

Sheppard, D., & Harrison, C. (1980). Readability of road safety publications. Transport and Road Research Laboratory, Road User Characteristics Division.

Chicago Style (17th ed.) Citation

Sheppard, D., and Colin Harrison. Readability of Road Safety Publications. Crowthorne, Eng: Transport and Road Research Laboratory, Road User Characteristics Division, 1980.

MLA (9th ed.) Citation

Sheppard, D., and Colin Harrison. Readability of Road Safety Publications. Transport and Road Research Laboratory, Road User Characteristics Division, 1980.