(a) Following such petition, there shall be the signatures of the petitioners who shall be registered voters of the county. Opposite the signature of each signer, which shall be written by himself in his own handwriting and not by his mark, there shall appear his residence address, including post office, and the district and precinct in which he is a registered voter. Below the signature of each signer his name shall be copied in print lettering by hand or mechanical means.
(b) Below the signatures there shall appear an affidavit made before a notary public or other person authorized to administer oaths in the state stating that each signature on the sheet was affixed in the presence of the affiant, that each such signature is the signature of the signer, that each signer is a registered voter of the county, and that each signer affixed his signature as his voluntary act. Any one (1) affidavit may apply to or cover any number of signatures to the petition.
(c) All sheets of a petition duly filed for a referendum on a proposed amendment shall constitute a single petition for such referendum on that amendment. The total number of signatures of different registered voters attached to the sheets constituting a single petition shall be not less than that number required by the charter if under the constitution of Maryland the charter controls, otherwise as provided in the constitution. (Mont. Co. Code 1965, § 2-2; 1968 L.M.C., Ex. Sess., ch. 8, § 2.)