International Labor Office & International Conference of Labor Statisticians. (1957). International standard classification of occupations: Major minor and unit groups ; final draft. [s.n.].
Chicago Style (17th ed.) CitationInternational Labor Office and International Conference of Labor Statisticians. International Standard Classification of Occupations: Major Minor and Unit Groups ; Final Draft. Geneva: [s.n.], 1957.
MLA (9th ed.) CitationInternational Labor Office and International Conference of Labor Statisticians. International Standard Classification of Occupations: Major Minor and Unit Groups ; Final Draft. [s.n.], 1957.
Warning: These citations may not always be 100% accurate.