Jackes, Betsy (5 Oct 2012). "Nauclea orientalis (Leichhardt tree)". Discover Nature at JCU. Plants on Cairns Campus. Australia: James Cook University. Archived from the original on 26 November 2012. Retrieved 17 May 2013.
Poiret (1798). "Nauclé à feilles de citronnier : Nauclea citrifolia. (N.)". In Lamarck (ed.). Encyclopédie méthodique. Botanique (in French and Latin). Vol. 4. Paris: H. Agasse. p. 435.
Douglas J. Boland; M.I.H. Brooker; G.M. Chippendale & Maurice William McDonald (2006). Douglas J. Boland (ed.). Forest trees of Australia. Csiro Publishing. pp. 650–651. ISBN978-0-643-06969-5.
"Nauclea orientalis Linn. Bangkal". Bureau of Plant Industry, Department of Agriculture, Republic of the Philippines. Retrieved May 3, 2011.
denr.gov.ph
erdb.denr.gov.ph
Maria Dayan; Rosalina Reaviles & Dolora Bandian (2007). "Indigenous Forest Tree Species in Laguna Province"(PDF). DENR Recommends. 15b. Ecosystems Research and Development Bureau, Department of Environment and Natural Resources: 12–13. Archived from the original(PDF) on August 15, 2011. Retrieved May 7, 2011.
derm.qld.gov.au
Stella Martin, ed. (2002). "Out and about"(PDF). Tropical Topics: An Interpretative Newsletter for the Tourism Industry (75). Environmental Protection Agency, Queensland Parks and Wildlife Service: 7. Archived from the original(PDF) on March 19, 2011. Retrieved May 4, 2011.
"Bangkal (Nauclea orientalis)". The Indi Journal: A Conservationist's Journal on Philippine Indigenous Flora. November 30, 2009. Archived from the original on December 4, 2010. Retrieved May 3, 2011.
Jackes, Betsy (5 Oct 2012). "Nauclea orientalis (Leichhardt tree)". Discover Nature at JCU. Plants on Cairns Campus. Australia: James Cook University. Archived from the original on 26 November 2012. Retrieved 17 May 2013.
Dean McAdam; Andrew Pickering; Michael Barritt; Dave Rochford (2006). Vanda West (ed.). "The Explorer's Tree"(PDF). Junior Ranger Review (3). Northern Territory Parks and Wildlife Service, Northern Territory Government, Australia: 8–9. ISSN1036-966X. Archived from the original(PDF) on April 9, 2011. Retrieved May 3, 2011.
"Jawoyn culture"(PDF). Nitmiluk National Park Tour Guide Handbook. Archived from the original(PDF) on 2011-03-20. Retrieved 2011-05-03.
pngplants.org
Barry Conn & Kipiro Damas. "PNGTreesKey – Nauclea orientalis L." PNGTrees, National Herbarium of New South Wales and Papua New Guinea National Herbarium.
rainforest-australia.com
John Chambers. "Leichhardt Tree". Chambers Wildlife Rainforest Lodges. Archived from the original on June 21, 2011. Retrieved May 3, 2011.
"Nauclea orientalis (L.) L." Ecology and Evolutionary Biology Plant Growth Facilities, University of Connecticut. April 1, 2011. Retrieved May 8, 2011.
Dean McAdam; Andrew Pickering; Michael Barritt; Dave Rochford (2006). Vanda West (ed.). "The Explorer's Tree"(PDF). Junior Ranger Review (3). Northern Territory Parks and Wildlife Service, Northern Territory Government, Australia: 8–9. ISSN1036-966X. Archived from the original(PDF) on April 9, 2011. Retrieved May 3, 2011.
"Bangkal (Nauclea orientalis)". The Indi Journal: A Conservationist's Journal on Philippine Indigenous Flora. November 30, 2009. Archived from the original on December 4, 2010. Retrieved May 3, 2011.
Maria Dayan; Rosalina Reaviles & Dolora Bandian (2007). "Indigenous Forest Tree Species in Laguna Province"(PDF). DENR Recommends. 15b. Ecosystems Research and Development Bureau, Department of Environment and Natural Resources: 12–13. Archived from the original(PDF) on August 15, 2011. Retrieved May 7, 2011.
John Chambers. "Leichhardt Tree". Chambers Wildlife Rainforest Lodges. Archived from the original on June 21, 2011. Retrieved May 3, 2011.
Stella Martin, ed. (2002). "Out and about"(PDF). Tropical Topics: An Interpretative Newsletter for the Tourism Industry (75). Environmental Protection Agency, Queensland Parks and Wildlife Service: 7. Archived from the original(PDF) on March 19, 2011. Retrieved May 4, 2011.
Dean McAdam; Andrew Pickering; Michael Barritt; Dave Rochford (2006). Vanda West (ed.). "The Explorer's Tree"(PDF). Junior Ranger Review (3). Northern Territory Parks and Wildlife Service, Northern Territory Government, Australia: 8–9. ISSN1036-966X. Archived from the original(PDF) on April 9, 2011. Retrieved May 3, 2011.