Section 2-15 Ordinances: Adoption By Reference.
   The council by ordinance may adopt by reference codes, ordinances and standards relating to building, plumbing, electrical installations, milk and milk products, and other matters which it has power to regulate otherwise. Such a code, ordinance or standard so adopted need not be enrolled in the book of ordinances; but a copy shall be filed and kept in the office of the city clerk. The city clerk shall keep copies of every such code, ordinances or standard in force for distribution or sale at their approximate cost.