All petition papers circulated for the purposes of an initiative or referendum shall be uniform in size and style. Initiative petition papers shall contain the full text of the proposed ordinance. The signatures to initiative or referendum petitions need not all be appended to one paper, but to each separate petition there shall be attached a statement of the circulator thereof as provided by this section. Each signer of a petition paper shall sign his name in ink or indelible pencil and shall indicate after his name his place of residence by street and number, or other description sufficient to identify the place, and his precinct number, if known. There shall appear on each petition the names and addresses of the same five electors, who, as a committee of the petitioners, shall be regarded as responsible for the circulation and filing of the petition. Attached to each separate petition paper there shall be an affidavit of the circulator thereof that he, and only he, personally circulated the foregoing paper, that it bears a stated number of signatures, that all the signatures appended thereto were made in his presence, and that he believes them to be the genuine signatures of the persons whose names they purport to be.