(1976). Working environment: Sixth item on the agenda. Geneva: International Labour Office.
Chicago Style aipamenaWorking Environment: Sixth Item On the Agenda. Geneva: International Labour Office, 1976.
MLA aipamenaWorking Environment: Sixth Item On the Agenda. Geneva: International Labour Office, 1976.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.