Gopala, A., Hadian, O., Sunarto, Sitompul, A., Williams, A., Leimgruber, P., Chambliss, S. E., Gunaryadi, D. (2011). "Elephas maximus ssp. sumatranus". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature.
Shoshani, J. (2005). "Order Proboscidea". In Wilson, D. E.; Reeder, D. M. Mammal Species of the World (3rd ed.). Johns Hopkins University Press. p. 90. ISBN 978-0-8018-8221-0. OCLC 62265494.
Shoshani, J. (2006) Taxonomy, Classification, and Evolution of Elephants In: Fowler, M. E., Mikota, S. K. (eds.) Biology, medicine, and surgery of elephants. Wiley-Blackwell. ISBN 0813806763. Pp. 3–14
Soehartono, T., Susilo, H. D., Sitompul, A. F., Gunaryadi, D., Purastuti, E. M., Azmi, W., Fadhli, N., and Stremme, C. (2007). The strategic and action plan for Sumatran and Kalimantan elephant. Departemen Kehutanan, Jakarta.
Puttipong, K., Clarke, B. (2002). Giants On Our Hands. Proceedings of the International Workshop on the Domesticated Asian Elephant 30: 253–254.
Suprayogi, B., Sugardjito, J. and R. P. H. Lilley (2002). Management of Sumatran elephants in Indonesia: Problems and challenges. Pages 183–194 in: Baker, I.and M. Kashio (eds.) Giants on our Hands. Proceedings of the International Workshop on the Domesticated Asian Elephant. FAO Regional Office for Asia and the Pacific, Bangkok.
