- ^ Togoyo at Ethnologue (25th ed., 2022)
- ^ Santandrea, S. (1953). "A PRELIMINARY ACCOUNT OF THE INDRI, TOGOYO, FEROGE, MANGAYA AND WORO". Sudan Notes and Records. 34 (2): 230–264. ISSN 0375-2984.
- ^ Language Death. De Gruyter Mouton. 2012-10-25. p. 396. doi:10.1515/9783110870602. ISBN 978-3-11-087060-2.
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