Παραπομπή APA
European Commission : Directorate-General for Economic and Financial Affairs. (1989). The Quest model (Version 1988). Brussels ; Belgium: European Commission: Directorate-General for Economic and Financial Affairs.
Παραπομπή Chicago StyleEuropean Commission : Directorate-General for Economic and Financial Affairs. The Quest Model (Version 1988). Brussels ; Belgium: European Commission: Directorate-General for Economic and Financial Affairs, 1989.
Παραπομπή MLAEuropean Commission : Directorate-General for Economic and Financial Affairs. The Quest Model (Version 1988). Brussels ; Belgium: European Commission: Directorate-General for Economic and Financial Affairs, 1989.
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