APA (7th ed.) Citation

Please, A., & Pike, D. C. (1968). The demand for road aggregates. Road Research Laboratory.

Chicago Style (17th ed.) Citation

Please, A., and D. C. Pike. The Demand for Road Aggregates. Crowthorne, Berkshire: Road Research Laboratory, 1968.

MLA (9th ed.) Citation

Please, A., and D. C. Pike. The Demand for Road Aggregates. Road Research Laboratory, 1968.