No will or revocation is valid unless executed either according to the provisions of this article, or according to the law of the place in which it was made, or in which the testator was at the time domiciled. R.L.1910, § 8352.
Oklahoma Legal Code
No will or revocation is valid unless executed either according to the provisions of this article, or according to the law of the place in which it was made, or in which the testator was at the time domiciled. R.L.1910, § 8352.