Shekelle, M.Distribution of tarsier acoustic forms, North and Central Sulawesi: With notes on the primary taxonomy of Sulawesi's tarsiers // Primates of the Oriental Night (неопр.) / Shekelle, M.; Groves, C.; Maryanto, I.; Schulze, H.; Fitch-Snyder, H.. — Bogor: LIPI Press (Research Center for Biology, Indonesian Institute of Sciences), 2008. — С. 35—50. Архивировано 3 марта 2016 года.
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Shekelle, M.Distribution of tarsier acoustic forms, North and Central Sulawesi: With notes on the primary taxonomy of Sulawesi's tarsiers // Primates of the Oriental Night (неопр.) / Shekelle, M.; Groves, C.; Maryanto, I.; Schulze, H.; Fitch-Snyder, H.. — Bogor: LIPI Press (Research Center for Biology, Indonesian Institute of Sciences), 2008. — С. 35—50. Архивировано 3 марта 2016 года.