Παραπομπή APA
European Commission. (1998). European minerals yearbook (2nd ed.). Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. European Minerals Yearbook. 2nd ed. Luxembourg: Office for Official Publications of the European Communities, 1998.
Παραπομπή MLAEuropean Commission. European Minerals Yearbook. 2nd ed. Luxembourg: Office for Official Publications of the European Communities, 1998.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.