Mont. Code Ann. § 7-7-4252

If a city or town conducts a public sale, the city or town council or commission shall cause a notice to be published as provided in 17-5-106 in a newspaper of general circulation printed and published in the city or town if there is a newspaper of general circulation and, if not, then in a newspaper of general circulation printed and published in the county in which the city or town is located. The council or commission may in its discretion cause the notice to be published in another newspaper or newspapers published either within or outside of the state that in the opinion of the council or commission will be most likely to give notice of the sale to prospective bidders.