International Labour Office. (1990). International standard classification of occupations: ISCO-88 ([Rev. ed. 1988].). International Labour Office.
Citace podle Chicago (17th ed.)International Labour Office. International Standard Classification of Occupations: ISCO-88. [Rev. ed. 1988]. Geneva: International Labour Office, 1990.
Citace podle MLA (9th ed.)International Labour Office. International Standard Classification of Occupations: ISCO-88. [Rev. ed. 1988]. International Labour Office, 1990.
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