International Labour Office. (1965). Maternity protection: A world survey of national law and practice. s.n.
Chicago Style aipamenaInternational Labour Office. Maternity Protection: A World Survey of National Law and Practice. Geneva: s.n, 1965.
MLA aipamenaInternational Labour Office. Maternity Protection: A World Survey of National Law and Practice. s.n, 1965.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.