Dyfyniad APA

BCIRA. (1979). IMPROVING WORKING EFICIENCIENCY IN IRON FOUNDRIES. B C I R A.

Dyfyniad Arddull Chicago

BCIRA. IMPROVING WORKING EFICIENCIENCY IN IRON FOUNDRIES. BIRMINGHAM: B C I R A, 1979.

Dyfyniad MLA

BCIRA. IMPROVING WORKING EFICIENCIENCY IN IRON FOUNDRIES. B C I R A, 1979.

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