Analysis of information sources in references of the Wikipedia article "Vương quốc Nam Tư" in Vietnamese language version.
Now, however, the official language of the new state, the Kingdom of Serbs, Croats, and Slovenes, bore the unwieldy name Serbo-Croato-Slovene (srpsko-hrvatsko-slovenački).
Similarly, the 1921 Constitution declared Serbocroatoslovenian as the official and national language of the Kingdom of Serbs, Croats, and Slovenians.