Lua APA (7ú heag.)
Organisation for Economic Co-operation and Development. (2020). The circular economy in Valladolid, Spain. OECD.
Lua i Stíl Chicago (17ú heag.)
Organisation for Economic Co-operation and Development. The Circular Economy in Valladolid, Spain. Paris: OECD, 2020.
Lua MLA (9ú heag.)
Organisation for Economic Co-operation and Development. The Circular Economy in Valladolid, Spain. OECD, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.