Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
National Bureau of Casualty and Surety Underwriters (U.S.) and International Association of Industrial Accident Boards and Commissions and American Society of Mechanical Engineers and American Engineering Standards Committee and United States. Bureau of Labor Statistics,Safety code for mechanical power-transmission apparatus,,G.P.O.,1924,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000794107981440