Παραπομπή APA
European Commission. (2002). 2001 annual energy review: January 2002. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. 2001 Annual Energy Review: January 2002. Luxembourg: Office for Official Publications of the European Communities, 2002.
Παραπομπή MLAEuropean Commission. 2001 Annual Energy Review: January 2002. Luxembourg: Office for Official Publications of the European Communities, 2002.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.