Alli, B. O. (2001). Fundamental principles of occupational health and safety. International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlli, B. O. Fundamental Principles of Occupational Health and Safety. Geneva: International Labour Office, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAlli, B. O. Fundamental Principles of Occupational Health and Safety. International Labour Office, 2001.
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