APA
World Health Organization, . (1998). IPCS (Environmental health criteria no - 202): Selected non-helerocyclic polycyclic aromatic hydrocarbons. Geneva: UNEP and World Health Organization.
Chicago
World Health Organization, . 1998. IPCS (Environmental health criteria no - 202): Selected non-helerocyclic polycyclic aromatic hydrocarbons. Geneva: UNEP and World Health Organization.
Harvard
World Health Organization, . (1998). IPCS (Environmental health criteria no - 202): Selected non-helerocyclic polycyclic aromatic hydrocarbons. Geneva: UNEP and World Health Organization.
MLA
World Health Organization, . IPCS (Environmental health criteria no - 202): Selected non-helerocyclic polycyclic aromatic hydrocarbons. Geneva: UNEP and World Health Organization. 1998.