APA
WHO, . (1991). Biosafety guidelines for diagnostic and research laboratories working with HIV. Geneva: World Health Organization.
Chicago
WHO, . 1991. Biosafety guidelines for diagnostic and research laboratories working with HIV. Geneva: World Health Organization.
Harvard
WHO, . (1991). Biosafety guidelines for diagnostic and research laboratories working with HIV. Geneva: World Health Organization.
MLA
WHO, . Biosafety guidelines for diagnostic and research laboratories working with HIV. Geneva: World Health Organization. 1991.