APA
World Health Organization, . (1989). Guidelines on sterilization and disinfection methods effective against human immunodeficiency virus(HIV). World Health Organization, Geneva: .
Chicago
World Health Organization, . 1989. Guidelines on sterilization and disinfection methods effective against human immunodeficiency virus(HIV). World Health Organization, Geneva: .
Harvard
World Health Organization, . (1989). Guidelines on sterilization and disinfection methods effective against human immunodeficiency virus(HIV). World Health Organization, Geneva: .
MLA
World Health Organization, . Guidelines on sterilization and disinfection methods effective against human immunodeficiency virus(HIV). World Health Organization, Geneva: . 1989.