Biondich, Mark; Stjepan Radić, the Croat Peasant Party, and the politics of mass mobilization, 1904-1928; University of Toronto Press, 2000 ISBN 0-8020-8294-7, page 9
According to articles 56 and 57 of Nagodba only official language in Croatia is Croatian (Po čl. 56. i 57. Hrvatsko-ugarske nagodbe u Hrvatskoj je u službenoj uporabi samo hrvatski jezik), Dragutin Pavličević, "Povijest Hrvatske", Naklada Pavičić, Zagreb, 2007, ISBN 978-953-6308-71-2, page 273
56. In the whole territory of Croatia-Slavonia the Croatian language is the language alike of the Legislature, the Administration and the Judicature. 57. Inside the frontiers of Croatia-Slavonia the Croatian language is prescribed as the official language for the organs of the Joint Government also.http://www.h-net.org/~habsweb/sourcetexts/nagodba2.htm (頁面存檔備份,存於互聯網檔案館) - online text from Robert William Seton-Watson, "The Southern Slav Question and the Habsburg Monarchy", London, Constable and Co., 1911, ISBN 0-7222-2328-5, page 371