ASFAHL, C. (1995). Industrial Safety And Health Management C. Ray Asfahl. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रASFAHL, C.RAY. Industrial Safety And Health Management C. Ray Asfahl. Prentice-Hall, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रASFAHL, C.RAY. Industrial Safety And Health Management C. Ray Asfahl. Prentice-Hall, 1995.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.