APA (7th ed.) Citation

Toombs, A. F., Snowdon, R. A., & O'Reilly, M. P. (1976). The particle-size distributions of debris produced during tunnelling trials. Transport and Road Research Laboratory.

Chicago Style (17th ed.) Citation

Toombs, A. F., R. A. Snowdon, and M. P. O'Reilly. The Particle-size Distributions of Debris Produced During Tunnelling Trials. Crowthorne, Eng.: Transport and Road Research Laboratory, 1976.

MLA (9th ed.) Citation

Toombs, A. F., et al. The Particle-size Distributions of Debris Produced During Tunnelling Trials. Transport and Road Research Laboratory, 1976.