Sitzler, F. (1932). The international reduction of hours of work. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Sitzler, Fritz. The International Reduction of Hours of Work. International Labour Organization, 1932.
Citatione MLA (9a ed.)Sitzler, Fritz. The International Reduction of Hours of Work. International Labour Organization, 1932.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.