Mohammad Mosiur Rahman, Md Shaiful Islam, Abdul Karim, Takad Ahmed Chowdhury, Muhammad Mushfiqur Rahman, Prodhan Mahbub Ibna Seraj et Manjet Kaur Mehar Singh, « English language teaching in Bangladesh today: Issues, outcomes and implications | Language Testing in Asia », Language Testing in Asia, vol. 9, no 1, , p. 9 (DOI10.1186/s40468-019-0085-8, lire en ligne)
Р. Медведев, « Непрерывное развитие языков: их влияние друг на друга и конкуренция », Наука и жизнь, (lire en ligne, consulté le )
nytimes.com
(en) David M. Halbfinger et Isabel Kershner, « Israeli Law Declares the Country the 'Nation-State of the Jewish People' », The New York Times, (lire en ligne, consulté le )
Mohammad Mosiur Rahman, Md Shaiful Islam, Abdul Karim, Takad Ahmed Chowdhury, Muhammad Mushfiqur Rahman, Prodhan Mahbub Ibna Seraj et Manjet Kaur Mehar Singh, « English language teaching in Bangladesh today: Issues, outcomes and implications | Language Testing in Asia », Language Testing in Asia, vol. 9, no 1, , p. 9 (DOI10.1186/s40468-019-0085-8, lire en ligne)
« THE CONSTITUTION OF INDIA », sur Legislative Department, Government of India, (consulté le ) : « 343. Official language of the Union.—(1) The official language of the Union shall be Hindi in Devanagari script. »