Position papers :
working groups = Rapports de base : groupes de travail.
APA Citation
World Energy Conference. Congress 1980 : Munich, G. (1980). Position papers: working groups = Rapports de base : groupes de travail. London: World Energy Conference.
MLA Citation
World Energy Conference. Congress 1980 : Munich, Germany). Position Papers: Working Groups = Rapports De Base : Groupes De Travail. London: World Energy Conference, 1980.
Warning: These citations may not always be complete (especially for serials).