APA (7th ed.) Citation

Holroyd, J., & Owens, D. (1971). Measuring the effectiveness of area traffic control systems. Road Research Laboratory.

Chicago Style (17th ed.) Citation

Holroyd, Joyce, and D. Owens. Measuring the Effectiveness of Area Traffic Control Systems. Crowthorne: Road Research Laboratory, 1971.

MLA (9th ed.) Citation

Holroyd, Joyce, and D. Owens. Measuring the Effectiveness of Area Traffic Control Systems. Road Research Laboratory, 1971.