Tor Dm̀aso & BSI Standards publications. Occupational health and safety management systems , OHSAS 18001,1999.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTor Dm̀aso और BSI Standards publications. Occupational Health and Safety Management Systems , OHSAS 18001,1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTor Dm̀aso और BSI Standards publications. Occupational Health and Safety Management Systems , OHSAS 18001,1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.