Sigma :
the bulletin of European statistics /
Statistical Office of the European Communities.
APA Citation
Office for Official Publications of the European Communities., Statistical Office of the European Communities. (1991). Sigma: the bulletin of European statistics. Luxembourg: Office for Official Publications of the European Communities.
MLA Citation
Office for Official Publications of the European Communities, and Statistical Office of the European Communities. Sigma: the Bulletin of European Statistics. Luxembourg: Office for Official Publications of the European Communities, 1991.
Warning: These citations may not always be complete (especially for serials).