Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Bureau of Labor Statistics and Association of Governmental Officials in Industry of the United States and Canada. Annual convention,"Association of Governmental Officials in Industry of the United States and Canada (formerly Association of Governmental Labor Officials) : fifteenth annual convention, New Orleans, LA., May 21-24, 1928",,"U.S. G.P.O,For sale by the Supt. of Docs., U.S. G.P.O.",1929,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282269303395072