Cita APA (7a ed.)

(1990). International standard classification of occupations: .ISO-88. .ILO.

Cita Chicago Style (17a ed.)

International Standard Classification of Occupations: .ISO-88. Geneva: .ILO, 1990.

Cita MLA (8a ed.)

International Standard Classification of Occupations: .ISO-88. .ILO, 1990.