(EN) Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig (eds), Mari, Hill, in Ethnologue: Languages of the World, Seventeenth edition, Dallas, Texas, SIL International, 2013.
(EN) Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig (eds), Mari, in Ethnologue: Languages of the World, Seventeenth edition, Dallas, Texas, SIL International, 2013.