International Labor Office. (1986). Economically active population estimates and projections, 1950-2025: Evaluations et projections de la population active, 1950-2025 ([3rd ed.].). International Labour Office.
Chicago-Zitierstil (17. Ausg.)International Labor Office. Economically Active Population Estimates and Projections, 1950-2025: Evaluations Et Projections De La Population Active, 1950-2025. [3rd ed.]. Geneva: International Labour Office, 1986.
MLA-Zitierstil (9. Ausg.)International Labor Office. Economically Active Population Estimates and Projections, 1950-2025: Evaluations Et Projections De La Population Active, 1950-2025. [3rd ed.]. International Labour Office, 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.