APA
World Health Organization, . (1973). Specification for pesticides used in public health: insecticides-rodenticides-molluscicides-repellents-methods. Geneva: World Health Oraganization.
Chicago
World Health Organization, . 1973. Specification for pesticides used in public health: insecticides-rodenticides-molluscicides-repellents-methods. Geneva: World Health Oraganization.
Harvard
World Health Organization, . (1973). Specification for pesticides used in public health: insecticides-rodenticides-molluscicides-repellents-methods. Geneva: World Health Oraganization.
MLA
World Health Organization, . Specification for pesticides used in public health: insecticides-rodenticides-molluscicides-repellents-methods. Geneva: World Health Oraganization. 1973.