世界語與伊多語的比較 (Chinese Wikipedia)

[1] （页面存档备份，存于互联网档案馆） Albaut, André, et al. (1992). AKTOJ de la AKADEMIO III: 1975–1991. Coconnier, Sablé-sur-Sarthe, France. Rekomendoj pri propraj nomoj, pp. 76.

bertilow.com

MAL. 2010-03-09 [2011-04-16]. （原始内容存档于2011-06-28）（世界语）.

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Ethnologue report on Esperanto （页面存档备份，存于互联网档案馆）, retrieved 27 March 2010.

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De Beaufront, L. Acento tonika [Tonic accent] (PDF). Kompleta Gramatiko Detaloza di Ido: 11–12. 2004 [2012-01-19]. （原始内容 (PDF)存档于2012-02-06）.

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ApGawain, Niklas; P.D. Hugon; J.L. Moore; L. de Beaufront. Ido For All (PDF). 2008-12-30: 52, 70 [2012-02-06]. （原始内容 (PDF)存档于2011-11-25）.

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Dyer, Luther H. The Problem of an International Auxiliary Language and its Solution in Ido. 1923: 54–74 [2012-02-12]. （原始内容存档于2018-05-07）.
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Guérard, A. L. Chapter VII. A Short History of the International Language Movement. [2012-02-12]. （原始内容存档于2012-02-06）.
Dyer, Luther H. The Problem of an International Auxiliary Language and its Solution in Ido. 1923: 54–74 [2012-02-12]. （原始内容存档于2018-05-07）.
Leau, Léopold. La Vereso pri la Delegitaro en 1907 [The Truth about the Delegation in 1907]. Progreso. August 1933, X (96): 4 [2012-02-12]. （原始内容存档于2022-03-27）.
Tekstaro de Esperanto. www.tekstaro.com. [2020-03-04]. （原始内容存档于2020-06-30）.
De Beaufront, L. Pronunco dil konstanti e digrami [Pronunciation of consonants and digraphs] (PDF). Kompleta Gramatiko Detaloza di Ido: 8–11. 2004 [2012-01-19]. （原始内容 (PDF)存档于2012-02-06）.
De Beaufront, L. Acento tonika [Tonic accent] (PDF). Kompleta Gramatiko Detaloza di Ido: 11–12. 2004 [2012-01-19]. （原始内容 (PDF)存档于2012-02-06）.
Chandler, James. Changes in Ido since 1922. 1997-11-06 [2012-01-19]. （原始内容存档于2022-03-27）.
ApGawain, Niklas; P.D. Hugon; J.L. Moore; L. de Beaufront. Ido For All (PDF). 2008-12-30: 52, 70 [2012-02-06]. （原始内容 (PDF)存档于2011-11-25）.
MAL. 2010-03-09 [2011-04-16]. （原始内容存档于2011-06-28）（世界语）.
[1] （页面存档备份，存于互联网档案馆） Albaut, André, et al. (1992). AKTOJ de la AKADEMIO III: 1975–1991. Coconnier, Sablé-sur-Sarthe, France. Rekomendoj pri propraj nomoj, pp. 76.
Ethnologue report on Esperanto （页面存档备份，存于互联网档案馆）, retrieved 27 March 2010.