American Engineering Standards Committee
, American Drop Forging Institute
and National Safety Council.
Safety Code for Forging and Hot Metal Stamping : Tentative American Standard, Approved April 8, 1927, American Engineering Standards Committee : Bulletin of the United States Bureau of Labor Statistics, No. 451 ,
Washington, D.C:
G.P.O.,
August 1927, https://fraser.stlouisfed.org/title/4045,
accessed on October 7, 2024.