Mont. Code Ann. § 40-6-234
The authority of the parent ceases:
History: En. Sec. 291, Civ. C. 1895; re-en. Sec. 3749, Rev. C. 1907; re-en. Sec. 5841, R.C.M. 1921; Cal. Civ. C. Sec. 204; Field Civ. C. Sec. 95; re-en. Sec. 5841, R.C.M. 1935; R.C.M. 1947, 61-112.