Versions of Montana Code 37-67-328. Certificate of authorization on LawServer 2023 Montana Code 37-67-328. Certificate of authorization 2022 Montana Code 37-67-328. Certificate of authorization 2021 Montana Code 37-67-328. Certificate of authorization 2019 Montana Code 37-67-328. Certificate of authorization 2018 Montana Code 37-67-328. Certificate of authorization 2016 Montana Code 37-67-328. Certificate of authorization