If the witness is imprisoned in the county where the action or proceeding is pending, the witness's production may be required. In all other cases, the witness's examination, when allowed, must be taken upon deposition.
Mont. Code Ann. § 26-2-203
When production of witness may be required
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.