APA
World Health Organisation U. N. E. P. &. I., . (1999). Health effects of interactions between tobacco use and exposure to other agents. WHO, Geneva: .
Chicago
World Health Organisation United Nations Environment Programme & ILO, . 1999. Health effects of interactions between tobacco use and exposure to other agents. WHO, Geneva: .
Harvard
World Health Organisation U. N. E. P. &. I., . (1999). Health effects of interactions between tobacco use and exposure to other agents. WHO, Geneva: .
MLA
World Health Organisation United Nations Environment Programme & ILO, . Health effects of interactions between tobacco use and exposure to other agents. WHO, Geneva: . 1999.