International Labor Office & International Conference of Labour Statisticians. (1957). International standard classification of occupations. Appendix VII: Draft Definitions. Second iten on the agenda. Report prepared for the ninth International Conference of Labour Statisticians, Geneva, April-May, 1957. [s.n.].
Citace podle Chicago (17th ed.)International Labor Office a International Conference of Labour Statisticians. International Standard Classification of Occupations. Appendix VII: Draft Definitions. Second Iten on the Agenda. Report Prepared for the Ninth International Conference of Labour Statisticians, Geneva, April-May, 1957. Geneva: [s.n.], 1957.
Citace podle MLA (9th ed.)International Labor Office a International Conference of Labour Statisticians. International Standard Classification of Occupations. Appendix VII: Draft Definitions. Second Iten on the Agenda. Report Prepared for the Ninth International Conference of Labour Statisticians, Geneva, April-May, 1957. [s.n.], 1957.