Missouri Revised Statutes Title XXXVI. Statutory Actions and Torts § 534.050. Demand for possession, how made and proved

The demand required by section 534.030 shall be made either by delivering a copy of such demand to the person in possession, or by leaving such copy with some person above the age of fifteen years, residing on or being in charge of the premises; or, if no such person be in the actual occupancy thereof, then by posting such copy on the premises. When the demand shall be made by an officer authorized to serve judicial process, his return shall be prima facie evidence of the facts therein stated; and if such demand be made by any other person, the return shall be sworn to by such person, and shall then be prima facie evidence of the facts therein stated.