Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2001). "Systems and Services for the Citizen": Cluster of research projects. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. "Systems and Services for the Citizen": Cluster of Research Projects. Luxembourg: Office for Official Publications of the European Communities, 2001.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. "Systems and Services for the Citizen": Cluster of Research Projects. Office for Official Publications of the European Communities, 2001.