Sec. 18-78. Contracting methods and procedures.

(a) All purchases of goods, including but not limited to supplies, materials, equipment, printed materials and all purchases of services, including but not limited to personal, professional, management and technical services needed by the city, but not including legal services, shall be exclusively made in the manner set forth in this article. Any agreement for purchase entered into in any manner inconsistent with the procedures stated in this article by any person shall not bind the city. The provisions of this article relating to public notice and competitive methods and procedures shall constitute the rules and regulations called for by sections 3(f), 28 and 29-A of the Charter.