APA-viite (7. p.)
Organisation for Economic Co-operation and Development. (1972). Portugal: 1972. OECD Publishing.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development. Portugal: 1972. Paris: OECD Publishing, 1972.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development. Portugal: 1972. OECD Publishing, 1972.
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