Mo. Rev. Stat. § 534.080
The summons shall be endorsed on or annexed to the complaint, and may be in the following form:
The state of Missouri, to the sheriff of the county of ______, greeting: You are hereby commanded to summon E F, of the county of ______, to appear before the undersigned judge within and for said county, at ______ therein, on the ______ day of ______, at the hour of ______ of the clock in the forenoon, then and there to answer and defend against the complaint of G H, of forcible entry and detainer (or of unlawful detainer, as the case may be), made by the said E F upon the land of the said G H, as by the complaint of the said G H, hereto annexed, will more fully appear, and have you then and there this writ, with the return of your proceedings thereon.
Given under my hand this ______ day of ______, 20______
A B, Judge.
§ 534.080, RSMo
Effective 1/2/1979