Krzeczkowski, K. (1923). Social insurance and international legislation. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Krzeczkowski, Konstanty. Social Insurance and International Legislation. International Labour Organization, 1923.
Citatione MLA (9a ed.)Krzeczkowski, Konstanty. Social Insurance and International Legislation. International Labour Organization, 1923.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.