The question of changing the statutory form of city government shall be submitted to the registered voters of the city at a general or special election to be held in the city not less than sixty (60) days nor more than ninety (90) days after the date of the order calling for the election. Notice of the election on the question shall be given by the governing body in the manner required for municipal elections.
Okla. Stat. tit. 11, § 18-102