United States. Bureau of Standards. (1937). Standard samples issued or in preparation by the National Bureau of Standards [metals], supplement to National Bureau of Standards Circular C398. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Standards. Standard Samples Issued or in Preparation by the National Bureau of Standards [metals], Supplement to National Bureau of Standards Circular C398. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Bureau of Standards. Standard Samples Issued or in Preparation by the National Bureau of Standards [metals], Supplement to National Bureau of Standards Circular C398. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.