Whenever an agreement is made that school library services will be provided by a city, or county library, the county, or city and county, or city superintendent of schools may draw a warrant for the whole amount stipulated in the agreement, payable to the proper authorities of the library, upon the filing with him of a copy of the resolution of the governing board of the district embodying the agreement made with the library. The copy shall be duly certified as correct by the clerk of the district or other proper officer.