Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (2008). Pre-commercial procurement: Driving innovation to ensure high quality public services in Europe. Office for Official Publications of the European Communities.

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. Pre-commercial Procurement: Driving Innovation to Ensure High Quality Public Services in Europe. Luxembourg: Office for Official Publications of the European Communities, 2008.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. Pre-commercial Procurement: Driving Innovation to Ensure High Quality Public Services in Europe. Office for Official Publications of the European Communities, 2008.