APA
Organisation for Economic Co-operation and Development Staff. (2007). OECD Factbook 2007: Economic, Environmental and Social Statistics. OECD.
https://doi.org/10.1787/factbook-2007-en
사이트
https://www.oecd-ilibrary.org/economics/oecd-factbook-2007_factbook-2007-en
다운로드