Não informado. (1967). OECD Economic Outlook. Organization for Economic Co-operation and Development.
Chicago-referens (17:e uppl.)Não informado. OECD Economic Outlook. Paris: Organization for Economic Co-operation and Development, 1967.
MLA-referens (8:e uppl.)Não informado. OECD Economic Outlook. Organization for Economic Co-operation and Development, 1967.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.