Dyfyniad APA

Third international safety conference. (1975). Hazards in tunnelling and on falsework. Institution of civil engineers.

Dyfyniad Arddull Chicago

Third international safety conference. Hazards in Tunnelling and on Falsework. London: Institution of civil engineers, 1975.

Dyfyniad MLA

Third international safety conference. Hazards in Tunnelling and on Falsework. Institution of civil engineers, 1975.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.