著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
United States. Children's Bureau,"Standards and problems connected with the issuance of employment certificates : proceedings of conference held under the auspices of the United States Children's Bureau and the National Education Associaation at Boston, Massachusetts, July 5-6, 1922",,Govt. Print. Off.,1923,Bureau publication,,,,https://cir.nii.ac.jp/crid/1130282269637543424