Ulong Island (English Wikipedia)

Tierney, Beth; Tierney, Shaun (1 May 2006). Diving the world: a guide to the world's coral seas. Footprint Travel Guides. pp. 327–. ISBN 978-1-904777-59-5. Retrieved 21 October 2011.
Great Britain. Hydrographic Dept (1900). Pacific islands ... (Public Domain ed.). The Hydrographic office, Admiralty. pp. 437–. Retrieved 21 October 2011.
D'Arcy, Paul (2006). The people of the sea: environment, identity and history in Oceania. University of Hawaii Press. pp. 107–. ISBN 978-0-8248-2959-9. Retrieved 21 October 2011.
Parmentier, Richard J. (1987). The sacred remains: myth, history, and polity in Belau. University of Chicago Press. pp. 332–. ISBN 978-0-226-64695-4. Retrieved 21 October 2011.

fishnfins.com (Global: low place; English: low place)

"Diving Ulong Channel". Archived from the original on 2017-06-19. Retrieved 2017-01-22.

"Diving Ulong Channel". Archived from the original on 2017-06-19. Retrieved 2017-01-22.