APA (7th ed.) Citation

International Labour Office. (1990). International standard classification of occupations: ISCO-88 ([Rev. ed. 1988].). International Labour Office.

Chicago Style (17th ed.) Citation

International Labour Office. International Standard Classification of Occupations: ISCO-88. [Rev. ed. 1988]. Geneva: International Labour Office, 1990.

MLA (9th ed.) Citation

International Labour Office. International Standard Classification of Occupations: ISCO-88. [Rev. ed. 1988]. International Labour Office, 1990.