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APAOrganisation for Economic Co-operation and Development Staff. (2006). OECD Factbook 2006: Economic, Environmental and Social Statistics. OECD. https://doi.org/10.1787/factbook-2006-en 사이트 https://www.oecd-ilibrary.org/economics/oecd-factbook-2006_factbook-2006-en 다운로드 https://www.oecd-ilibrary.org/oecd-factbook-2006_5kmjrgqmpl5g.pdf?itemId=%2Fcontent%2Fpublication%2Ffactbook-2006-en&mimeType=pdf
APA The Children’s Society. (2016). The Good Childhood Report 2016. 사이트 https://www.childrenssociety.org.uk/what-we-do/resources-and-publications/the-good-childhood-report-2016 다운로드(full)https://www.childrenssociety.org.uk/sites/default/files/pcr090_mainreport_web.pdf (summary)https://www.childrenssociety.org.uk/sites/default/files/pcr090_summary_web.pdf