Who drafts the referendum question?

Law on Referendum (1995, last amended in 2008)

http://aceproject.org/ero-en/regions/asia/KZ/kazakhstan-constitutional-law-on-referenum-1995/view

Article 21. Authorities of the Central ReferendumCommission

1. The Central Election Commission shall:

[…]

7) establish the form and texts of the ballot, thevoter lists, subscription lists and other documents necessary for conduct ofreferendum; the voting time; the procedure for storage of referendum documents;