Vooys, I. P. d. (1923). Labour legislation and economic possibilities. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Vooys, Is. P. de. Labour Legislation and Economic Possibilities. International Labour Organization, 1923.
Citatione MLA (9a ed.)Vooys, Is. P. de. Labour Legislation and Economic Possibilities. International Labour Organization, 1923.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.