All testimony to be considered by the Authority in a formal hearing must be sworn testimony except for matters of which official notice is taken or matters entered by stipulation. Before testifying, each witness shall declare, under oath or affirmation, that the testimony he or she is to give at the hearing will be the truth, the whole truth and nothing but the truth.
Nev. Admin. Code § 706.3985
NRS 233B.050, 706.171