Παραπομπή σε μορφή APA (7η εκδ.)

European Commission. (1998). GCAS operational requirements and certification: GORAC. Office for Official Publications of the European Communities ; Bernan Associates [distributor].

Παραπομπή σε μορφή Chicago (17η εκδ.)

European Commission. GCAS Operational Requirements and Certification: GORAC. Luxembourg : Lanham, Md.: Office for Official Publications of the European Communities ; Bernan Associates [distributor], 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

European Commission. GCAS Operational Requirements and Certification: GORAC. Office for Official Publications of the European Communities ; Bernan Associates [distributor], 1998.