APA
World Health Organization no.763, . (1988). Training and education in occupational health. World Health Organisation, Geneva: .
Chicago
World Health Organization no.763, . 1988. Training and education in occupational health. World Health Organisation, Geneva: .
Harvard
World Health Organization no.763, . (1988). Training and education in occupational health. World Health Organisation, Geneva: .
MLA
World Health Organization no.763, . Training and education in occupational health. World Health Organisation, Geneva: . 1988.