Social Security Board. Bureau of Research and Statistics. (1938). Bureau Report: Social Security Board, Bureau of Research and Statistics. U.S.Government Printing Office.
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Chicago Style (17th ed.) Zitazioa
Social Security Board. Bureau of Research and Statistics. Bureau Report: Social Security Board, Bureau of Research and Statistics. Washington: U.S.Government Printing Office, 1938.
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MLA (9th ed.) Zitazioa
Social Security Board. Bureau of Research and Statistics. Bureau Report: Social Security Board, Bureau of Research and Statistics. U.S.Government Printing Office, 1938.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.