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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.