Dyfyniad APA

British Standards Institution. (1970). Universal decimal classification: UDC 662.6 / .9 Fuels (English full ed.). British Standards Institution.

Dyfyniad Arddull Chicago

British Standards Institution. Universal Decimal Classification: UDC 662.6 / .9 Fuels. English full ed. London: British Standards Institution, 1970.

Dyfyniad MLA

British Standards Institution. Universal Decimal Classification: UDC 662.6 / .9 Fuels. English full ed. British Standards Institution, 1970.

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