Woytinsky, W. S. (1931). New statistics of collective agreements in Germany. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Woytinsky, W. S. New Statistics of Collective Agreements in Germany. International Labour Organization, 1931.
Citatione MLA (9a ed.)Woytinsky, W. S. New Statistics of Collective Agreements in Germany. International Labour Organization, 1931.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.