"Public Works Tenders"(pdf). Government Gazette of Western Australia (15). Perth, WA: Government of Western Australia: 487. 16 February 1962. Retrieved 21 June 2018.
smh.com.au
Fairfax Digital (8 February 2004). "Travel - Ongerup". The Sydney Morning Herald. Retrieved 17 July 2007.
"Ongerup". Sydney Morning Herald. 8 February 2004. Retrieved 17 July 2023.