Okla. Stat. tit. 59, § 15.37
From and after June 24, 1971, no ordinance, trust or other legal instrument shall provide for any audit services to be performed other than by a registrant holding a valid permit.
Laws 1971, HB 1299, c. 324, § 3, emerg. eff. June 24, 1971; Amended by Laws 1992, HB 2340, c. 272, § 32, eff. September 1, 1992; Renumbered from 59 O.S. § 15.33 by Laws 1992, HB 2340, c. 272, § 34, eff. September 1, 1992; Amended by Laws 2004, SB 1488, c. 125, § 32, eff. November 1, 2004 (superseded document available).