The Regents of the University of California shall prescribe methods of procurement for goods, materials, and services to be purchased, including:
(a) Requirements for public advertisement where feasible and practicable or for solicitation from at least three sources in other cases.
(b) Bidder prequalification and evaluation standards.
(c) Guidelines for negotiating contracts for unique products or proprietary services.
(d) Procedures for solicitation of vendor and service contractor interest.
(e) Dissemination of award information.
(f) Such other matters as may encourage the receipt of the most favorable price and conditions of purchase by the university.