(1970). International occupational safety health congress. International Labour Office.
Chicago Style (17. basım) AtıfInternational Occupational Safety Health Congress. Geneva: International Labour Office, 1970.
MLA (9th ed.) AtıfInternational Occupational Safety Health Congress. International Labour Office, 1970.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..