Alli B.O. (2008). Fundamental principles of occupational health and safety. ILO.
Чикаго маягийн жагсаалтAlli B.O. Fundamental Principles of Occupational Health and Safety. Geneva: ILO, 2008.
MLA ишлэлAlli B.O. Fundamental Principles of Occupational Health and Safety. ILO, 2008.
Warning: These citations may not always be 100% accurate.