Mo. Rev. Stat. § 660.200
660.200 Rules, procedure.
660.200. Rules, procedure. — No rule or portion of a rule promulgated under the authority of sections 660.150 to 660.200 shall become effective unless it has been promulgated pursuant to the provisions of section 536.024 .
(L. 1979 H.B. 545, et al. § 19, A.L. 1981 S.B. 200, A.L. 1995 S.B. 3)