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",13th ed,Bernan Press,2010,Bernan Press U.S. databook series,,9781598884043,,https://cir.nii.ac.jp/crid/1130282271927428736