International Labour Office. (1949). International Standard Classification of Occupations (1949.). International Labour Office.
Chicago Edition CitationInternational Labour Office. International Standard Classification of Occupations. 1949. [s.l: International Labour Office, 1949.
MLA Edition CitationInternational Labour Office. International Standard Classification of Occupations. 1949. International Labour Office, 1949.
Warning: These citations may not always be 100% accurate.