Economic Commission for Europe (Ginebra). Annual bulletin of gas statistics for Europe=Bulletin annuel de statistiques du gaz pour l'Europe. Naciones Unidas.
Chicago Style (17th ed.) CitationEconomic Commission for Europe (Ginebra). Annual Bulletin of Gas Statistics for Europe=Bulletin Annuel De Statistiques Du Gaz Pour L'Europe. Nueva York: Naciones Unidas.
MLA (9th ed.) CitationEconomic Commission for Europe (Ginebra). Annual Bulletin of Gas Statistics for Europe=Bulletin Annuel De Statistiques Du Gaz Pour L'Europe. Naciones Unidas.
Warning: These citations may not always be 100% accurate.