Burton, J.A. (November 19, 2010). "Geographical variation in duet songs of Sulawesi tarsiers: evidence for new cryptic species in south and southeast Sulawesi". International Journal of Primatology. 31 (6): 1123–1146. doi:10.1007/s10764-010-9449-8. ISSN1573-8604. S2CID32358378.
Burton, J.A. (November 19, 2010). "Geographical variation in duet songs of Sulawesi tarsiers: evidence for new cryptic species in south and southeast Sulawesi". International Journal of Primatology. 31 (6): 1123–1146. doi:10.1007/s10764-010-9449-8. ISSN1573-8604. S2CID32358378.
Burton, J.A. (November 19, 2010). "Geographical variation in duet songs of Sulawesi tarsiers: evidence for new cryptic species in south and southeast Sulawesi". International Journal of Primatology. 31 (6): 1123–1146. doi:10.1007/s10764-010-9449-8. ISSN1573-8604. S2CID32358378.