European Commission (Brussels, Belgium). (2002). Systems and services for the citizen. Synopses of research projects. Applications relating to environmental protection: Projects running in Spring 2001. Office for Official Publications of the European Communities.
Citácia podle Chicago (17th ed.)European Commission (Brussels, Belgium). Systems and Services for the Citizen. Synopses of Research Projects. Applications Relating to Environmental Protection: Projects Running in Spring 2001. Luxembourg: Office for Official Publications of the European Communities, 2002.
Citácia podľa MLA (8th ed.)European Commission (Brussels, Belgium). Systems and Services for the Citizen. Synopses of Research Projects. Applications Relating to Environmental Protection: Projects Running in Spring 2001. Office for Official Publications of the European Communities, 2002.