APA (7th ed.) Citation

West, G., & Ewan, V. J. (1981). Site investigation and construction of the Dinorwic diversion tunnel. Transport and Road Research Laboratory.

Chicago Style (17th ed.) Citation

West, G., and V. J. Ewan. Site Investigation and Construction of the Dinorwic Diversion Tunnel. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.

MLA (9th ed.) Citation

West, G., and V. J. Ewan. Site Investigation and Construction of the Dinorwic Diversion Tunnel. Transport and Road Research Laboratory, 1981.