Barker, E. (1953). Introduction to Steel Shipbuilding. McGraw-Hill.
Dyfyniad Arddull ChicagoBarker, Elijah. Introduction to Steel Shipbuilding. New York: McGraw-Hill, 1953.
Dyfyniad MLABarker, Elijah. Introduction to Steel Shipbuilding. McGraw-Hill, 1953.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.