Initiative petition papers shall contain the full text of the proposed legislation in the form of an ordinance, including a descriptive caption. Referendum petition papers shall contain a sufficient description of the ordinance sought to be referred to identify it, or if the ordinance has been passed by the City Council, the full text of the ordinance sought to be referred shall be included in such papers. The signatures to the initiative or referendum petitions need not be all appended to one paper, but each signatory shall sign his or her name in ink or indelible pencil, together with a notation showing such signatory’s residence address and the precinct number and serial number that appear on his or her voter registration certificate or such other document as shall be prescribed by the Laws of the State of Texas to identify qualified voters under any future legislation. No signature shall be counted where there is reason to believe it is not the actual signature of the purported signatory or that it is a duplication either of the name or of handwriting used in any other signature on the petition, and no signature shall be counted unless the residence address of the signatory is shown, or unless it is signed exactly as the name of the voter appears on the official copy of the current poll list or such other document as may be prescribed by the Laws of the State of Texas to identify qualified voters under any future legislation, or unless the precinct number and serial number that appear on the signatory’s voter registration certificate or such other document as may be prescribed by state Law to identify qualified voters under any future legislation are noted as above required. Before the signatures on any petition paper may be counted, one of the persons signing such petition paper, a qualified voter, shall make oath before the City Secretary or other officer competent to administer oaths that the statements made therein are true, that each signature to the paper appended is a genuine signature of the person whose name purports to be signed thereto, and that such signatures were placed thereon in his or her presence.