Dyfyniad APA

National Buildings Organisation (India). (1968). Fly ash and its application as a building material. National Buildings Organisation & UN Regional Housing Centre, ECAFE.

Dyfyniad Arddull Chicago

National Buildings Organisation (India). Fly Ash and Its Application as a Building Material. New Delhi: National Buildings Organisation & UN Regional Housing Centre, ECAFE, 1968.

Dyfyniad MLA

National Buildings Organisation (India). Fly Ash and Its Application as a Building Material. National Buildings Organisation & UN Regional Housing Centre, ECAFE, 1968.

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