- Geographical facts, flags and ensigns of Bulgaria ...www.flags.net/BULG.htm
- Bulgaria Flags geographic.org; portugese flag; Flag of Bulgaria geographic.org ...www.geographic.org/flags/bulgaria_flags.html
- Bulgaria Copyright 1998 - 2001 Pascal Gross. All rights reserved. ...www.atlasgeo.net/flags/anglais/html/Ebulgaria.htm
