葡萄牙語圈
參考資料

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↑  ~500,000 use it as their mother tongue in the 2012 estimate, see Répartition des étrangers par nationalité （页面存档备份，存于）
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↑   [Uruguayan government makes Portuguese mandatory]. UOL Notícias. 5 November 2007  [13 July 2010]. （原始内容存档于2021-05-01） （葡萄牙语）.
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↑  . 4 June 2010  [13 July 2010]. （原始内容存档于7 August 2010） （葡萄牙语）.
↑  . 4 June 2010  [13 July 2010]. （原始内容存档于7 August 2010） （葡萄牙语）.
↑   [Portuguese enters the Ivory Coast school curriculum next school year]. www.portugal.gov.pt. 23 June 2016  [2020-07-10]. （原始内容存档于2021-05-01） （葡萄牙语）.
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↑   [Portuguese to be introduced to secondary education in Zimbabwe]. SAPO 24. 18 January 2017  [2020-07-10]. （原始内容存档于2021-04-14） （葡萄牙语）.
↑   [Zimbabwe: Portuguese to be introduced into the country's secondary education]. Angola Press – ANGOP. 19 January 2017  [2020-07-10]. （原始内容存档于2020-08-06） （葡萄牙语）.
↑   [Portuguese will be curricular language in 32 countries next school year]. SAPO 24. 22 July 2019  [2020-07-10]. （原始内容存档于2021-05-01） （葡萄牙语）.
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↑  The Portuguese Dialect of Uruguay (DPU) is spoken by circa 15% of the Uruguayan population according Juan Pedro Mir, director of education of the Ministry of Education and Culture of the country （页面存档备份，存于）. pgl.gal (19 August 2017)
↑  O dialeto fronteiriço do Uruguai: origens, investigações e oportunidades 的存檔，存档日期27 February 2016. Espaço acadêmico. Retrieved 17 December 2010
↑  . Central Intelligence Agency. 2008  [2008-06-03]. （原始内容存档于2015-12-22）.  |booktitle=被忽略 (帮助)
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↑  A New Country’s Tough Non-Elective: Portuguese 101 （页面存档备份，存于）, Seth Mydans, New York Times, July 31, 2007
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↑  "Filhos de dekasseguis: educação de mão dupla" （页面存档备份，存于）. (Archive). Centenário da Imigração Japonesa: 100 anos de histórias. Museu Histórico da Imigração Japonesa no Brasil. "Segundo dados do Ministério da Justiça do Japão, em 2005, havia 302 mil brasileiros morando no país, além de 26 mil com dupla nacionalidade. Todo ano, cerca de 4 mil deles retornam para o Brasil."
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