Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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