Who decides on the final form of the ballot text?

Uganda
THEREFERENDUM AND OTHER PROVISIONS ACT (2005)
http://aceproject.org/ero-en/regions/africa/UG/uganda-referendum-act-2005
SECOND SCHEDULE
QUESTION FORAPPROVAL OF A BILL BY REFERENDUM UNDER ARTICLE 259 OF
THE CONSTITUTION
SECTION 14(3)
“In this Bill foran Act of Parliament entitled ......……………..............., which is now before you,Parliament has amended the following provisions of the 1995 Constitution of theRepublic of Uganda, among other provisions of the Constitution -
.........................................