(1956). The world's working population: Its distribution by status and occupation. International Labour Organization.
Chicago-Zitierstil (17. Ausg.)The World's Working Population: Its Distribution by Status and Occupation. International Labour Organization, 1956.
MLA-Zitierstil (9. Ausg.)The World's Working Population: Its Distribution by Status and Occupation. International Labour Organization, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.