6 GCA § 7201: Subpoenas, How Issued.

A subpoena is issued as follows:

1. To require attendance before a court, or at the trial of an issue therein, as provided in Rule 45 of the Guam Rules of Civil Procedure. The Guam Rules of Civil Procedure are those Rules of Civil Procedure for the Superior Court of Guam adopted by the Judicial Council of Guam on August 20, 1975, having an effective date of December 26, 1975, and as amended from time to time as provided in law.

2. To require attendance out of court, in cases not provided for in subparagraph (1), before a judge, justice or other officer authorized to administer oaths or to take testimony in any matter under the laws of Guam, it is issued by the judge, justice or other officer before whom the attendance is required.