Παραπομπή APA

(1975). Hazards in Tunnelling and on Faleswork. Institution of Civil Engineers.

Παραπομπή Chicago Style

Hazards in Tunnelling and on Faleswork. London: Institution of Civil Engineers, 1975.

Παραπομπή MLA

Hazards in Tunnelling and on Faleswork. Institution of Civil Engineers, 1975.