International Labor Office, Geneva. (1921). Studies and reports, series I (Employment of women and children) no.1. s.n.
Cita Chicago (17th ed.)International Labor Office, Geneva. Studies and Reports, Series I (Employment of Women and Children) No.1. Geneva: s.n, 1921.
Cita MLA (9th ed.)International Labor Office, Geneva. Studies and Reports, Series I (Employment of Women and Children) No.1. s.n, 1921.
Atenció: Aquestes cites poden no estar 100% correctes.