Mo. Rev. Stat. § 91.720
Revenue bonds issued under sections 91.620 to 91.770 shall not be payable from or charged upon any funds, other than the revenue pledged to the payment thereof, nor shall the municipality issuing the same be subject to any pecuniary liability thereon. No holder or holders of any such bonds shall ever have the right to compel any exercise of the taxing power of the municipality to pay any such bonds or the interest thereon, nor to enforce payment thereof against any property of the municipality, nor shall any such bonds constitute a charge, lien or encumbrance, legal or equitable, upon any property of the municipality. Each bond issued under sections 91.620 to 91.770 shall recite in substance that said bond, including interest thereon, is payable solely from the revenue pledged to the payment thereof, and that said bond does not constitute a debt of the municipality within the meaning of any constitutional or statutory limitation.
§ 91.720, RSMo