APA
WHO, . (1998). Phosgene health and safety guide. auth., Geneva: .
Chicago
WHO, . 1998. Phosgene health and safety guide. auth., Geneva: .
Harvard
WHO, . (1998). Phosgene health and safety guide. auth., Geneva: .
MLA
WHO, . Phosgene health and safety guide. auth., Geneva: . 1998.