Okla. Stat. tit. 5, Rule 21
Rules of the Court on the Judiciary
Chapter 1, App. 7
Trial Division
Rule 21. Law Governing Procedural Matters.
In all procedural matters not covered by rule of the Trial Division, the provisions of the Code of Civil Procedure, or of the Common Law of Oklahoma, or the provisions of the Rules of the Supreme Court of Oklahoma, applicable to the District Courts of Oklahoma, shall be followed, so far as they may be applicable.
Adopted by Order NO. C.J.T.D.-2 on December 28, 1966, effective January 1, 1967; Amended by order of April 21, 1989.