APA
World Health Organization, . (1987). IPCS (Environmental health criteria no - 072): principles of studies on diseases of suspected chemical etiology and their prevention. Geneva: UNEP and World Health Organization.
Chicago
World Health Organization, . 1987. IPCS (Environmental health criteria no - 072): principles of studies on diseases of suspected chemical etiology and their prevention. Geneva: UNEP and World Health Organization.
Harvard
World Health Organization, . (1987). IPCS (Environmental health criteria no - 072): principles of studies on diseases of suspected chemical etiology and their prevention. Geneva: UNEP and World Health Organization.
MLA
World Health Organization, . IPCS (Environmental health criteria no - 072): principles of studies on diseases of suspected chemical etiology and their prevention. Geneva: UNEP and World Health Organization. 1987.