Dyfyniad APA

Pinfold, G. (1975). Reinforced concreate chimneys and towers. Viewpoint Pub.

Dyfyniad Arddull Chicago

Pinfold, Geoffrey.M. Reinforced Concreate Chimneys and Towers. London: Viewpoint Pub, 1975.

Dyfyniad MLA

Pinfold, Geoffrey.M. Reinforced Concreate Chimneys and Towers. Viewpoint Pub, 1975.

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