APA-viite (7. p.)
Organisation for Economic Co-operation and Development. (2020). The circular economy in Valladolid, Spain. OECD.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development. The Circular Economy in Valladolid, Spain. Paris: OECD, 2020.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development. The Circular Economy in Valladolid, Spain. OECD, 2020.
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