International Labor Office. (1998). International labour standards: A workers' education manual (4th ed.). International Labour Office.
Citazione stile Chigago Style (17a edizione)International Labor Office. International Labour Standards: A Workers' Education Manual. 4th ed. Geneva: International Labour Office, 1998.
Citatione MLA (9a ed.)International Labor Office. International Labour Standards: A Workers' Education Manual. 4th ed. International Labour Office, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.