Mo. Rev. Stat. § 160.272
No rule or portion of a rule promulgated under the authority of this chapter shall become effective unless it has been promulgated pursuant to the provisions of section 536.024.
(L. 1985 H.B. 463 § 8, A.L. 1993 S.B. 52, A.L. 1995 S.B. 3)