APA
World Health Organization U. N. E. P. &. I., . (1999). Biphenyl. WHO, Geneva: .
Chicago
World Health Organization United Nations Environment Programme & ILO, . 1999. Biphenyl. WHO, Geneva: .
Harvard
World Health Organization U. N. E. P. &. I., . (1999). Biphenyl. WHO, Geneva: .
MLA
World Health Organization United Nations Environment Programme & ILO, . Biphenyl. WHO, Geneva: . 1999.