International Labor Office, Geneva. (1925). Studies and reports, series I (Social insurance) no.1. s.n.
Citazione stile Chigago Style (17a edizione)International Labor Office, Geneva. Studies and Reports, Series I (Social Insurance) No.1. Geneva: s.n, 1925.
Citatione MLA (9a ed.)International Labor Office, Geneva. Studies and Reports, Series I (Social Insurance) No.1. s.n, 1925.
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