APA
World Health Organization, . (2011). IPCS (Intarnational Programme On Chemical Safety): DDT in Indoor Residual Spraying : Human Health Aspects. Geneva: World Health Publication.
Chicago
World Health Organization, . 2011. IPCS (Intarnational Programme On Chemical Safety): DDT in Indoor Residual Spraying : Human Health Aspects. Geneva: World Health Publication.
Harvard
World Health Organization, . (2011). IPCS (Intarnational Programme On Chemical Safety): DDT in Indoor Residual Spraying : Human Health Aspects. Geneva: World Health Publication.
MLA
World Health Organization, . IPCS (Intarnational Programme On Chemical Safety): DDT in Indoor Residual Spraying : Human Health Aspects. Geneva: World Health Publication. 2011.