When a contract for a particular acquisition for services or goods, which, by the contract specifications needed by the agency, restricts the contract to one vendor or to one brand name, the purchase can be made without informal quotations or formal bids. All sole source purchases are subject to the approval of the Chancellor or the Chancellor's designee, and must be supported by a written statement of justification from the requesting unit.
Okla. Admin. Code § 610:1-11-10