Seminar on Geothermal Energy Brüssel. (1977). Seminar on Geothermal Energy: Brussels, 6-8 December 1977 ; first results of projects funded by the European Communities. Commission of the European Communities.
Chicago-Zitierstil (17. Ausg.)Seminar on Geothermal Energy Brüssel. Seminar on Geothermal Energy: Brussels, 6-8 December 1977 ; First Results of Projects Funded by the European Communities. Luxembourg: Commission of the European Communities, 1977.
MLA-Zitierstil (9. Ausg.)Seminar on Geothermal Energy Brüssel. Seminar on Geothermal Energy: Brussels, 6-8 December 1977 ; First Results of Projects Funded by the European Communities. Commission of the European Communities, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.