Who decides on the final form of the ballot text?

Serbia, Law on the Referendum and the People’s Initiative (December 2021) [in Serbian], accessed 20 December 2021

Article 19. […] The Republic Electoral Commission shall be responsible for conducting national referendum, the provincial electoral commission for conducting the provincial referendum, and the city/municipal electoral commission for conducting the referendum in the local self-government units (hereinafter: competent commission).

Article 36. A question put to the vote in a referendum must be expressed clearly and unambiguously so that it can be answered by a single word: "for" or "against", or "yes" or "no", and must not be expressed in such a way to give priority to or suggest one of the possible answers.

Before making a decision on calling a referendum, the committee of the National Assembly competent for constitutional issues, i.e. the competent working body of the provincial assembly or the assembly of a local self-government unit, is obliged to obtain a positive opinion of the competent commission on the proposed referendum question with the offered answers.

In the case of a referendum at the request of voters, the opinion of the competent commission referred to in paragraph 2 of this Article shall be obtained in the procedure of verifying a proposition to exercise a people's initiative.

The competent commission shall deliver its opinion within eight days from the day of receiving referendum question proposition.

If the competent commission does not deliver its opinion within the deadline referred to in paragraph 4 of this Article, it shall be considered that a positive opinion has been given.