Não informado. (1967). OECD Economic Outlook. Organization for Economic Co-operation and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. OECD Economic Outlook. Paris: Organization for Economic Co-operation and Development, 1967.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. OECD Economic Outlook. Organization for Economic Co-operation and Development, 1967.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.