Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Ryan, Mary Meghan","Handbook of U.S. labor statistics : employment, earnings, prices, productivity, and other labor data",22nd ed,Bernan Press,2019,Bernan Press U.S. databook series,,9781641433280,,https://cir.nii.ac.jp/crid/1130000794239099008