Dyfyniad APA

United States Steel Corporation. (1921). The methods of the chemists of the United States Steel Corporation for the sampling and analysis of alloy steels ([2d ed.].). Stevenson & Co., printers.

Dyfyniad Arddull Chicago

United States Steel Corporation. The Methods of the Chemists of the United States Steel Corporation for the Sampling and Analysis of Alloy Steels. [2d ed.]. [Pittsburgh: Stevenson & Co., printers, 1921.

Dyfyniad MLA

United States Steel Corporation. The Methods of the Chemists of the United States Steel Corporation for the Sampling and Analysis of Alloy Steels. [2d ed.]. Stevenson & Co., printers, 1921.

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