APA (7th ed.) Citation

Dumbleton, M. J., & West, G. (1976). A guide to site investigation procedures for tunnels. Transport and Road Research Laboratory.

Chicago Style (17th ed.) Citation

Dumbleton, M. J., and G. West. A Guide to Site Investigation Procedures for Tunnels. Crowthorne, Eng.: Transport and Road Research Laboratory, 1976.

MLA (9th ed.) Citation

Dumbleton, M. J., and G. West. A Guide to Site Investigation Procedures for Tunnels. Transport and Road Research Laboratory, 1976.