APA
World Health Organization Regional office for Europe Copenhagen, . (1986). Health impact of different energy sources : A challenge for the end of the century. U Geneva: World Health Organization Regional office for Europe Copenhagen.
Chicago
World Health Organization Regional office for Europe Copenhagen, . 1986. Health impact of different energy sources : A challenge for the end of the century. U Geneva: World Health Organization Regional office for Europe Copenhagen.
Harvard
World Health Organization Regional office for Europe Copenhagen, . (1986). Health impact of different energy sources : A challenge for the end of the century. U Geneva: World Health Organization Regional office for Europe Copenhagen.
MLA
World Health Organization Regional office for Europe Copenhagen, . Health impact of different energy sources : A challenge for the end of the century. U Geneva: World Health Organization Regional office for Europe Copenhagen. 1986.