APA-viite (7. p.)
Organisation for Economic Co-operation and Development. (1978). Oecd economic surveys: Portugal 1977. OECD Publishing.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development. Oecd Economic Surveys: Portugal 1977. Paris, France: OECD Publishing, 1978.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development. Oecd Economic Surveys: Portugal 1977. OECD Publishing, 1978.
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