Παραπομπή APA
European Commission. (1990). Stahlverbrauch nach verbrauchsbereichen 1970-1987= Steel consumption by user branch 1970-1987. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Stahlverbrauch Nach Verbrauchsbereichen 1970-1987= Steel Consumption By User Branch 1970-1987. Luxembourg: Office for Official Publications of the European Communities, 1990.
Παραπομπή MLAEuropean Commission. Stahlverbrauch Nach Verbrauchsbereichen 1970-1987= Steel Consumption By User Branch 1970-1987. Luxembourg: Office for Official Publications of the European Communities, 1990.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.