Cita APA (7th ed.)

International Labor Office, Geneva. (1924). Studies and reports, series I (Professional workers) no.1. s.n.

Cita Chicago (17th ed.)

International Labor Office, Geneva. Studies and Reports, Series I (Professional Workers) No.1. Geneva: s.n, 1924.

Cita MLA (9th ed.)

International Labor Office, Geneva. Studies and Reports, Series I (Professional Workers) No.1. s.n, 1924.