"DEATH OF MR. R. ALSOP". The West Australian. Vol. XLVIII, no. 9, 465. Western Australia. 27 October 1932. p. 16. Archived from the original on 22 August 2022. Retrieved 1 April 2022 – via National Library of Australia.
"DEATH OF MR. R. ALSOP". The West Australian. Vol. XLVIII, no. 9, 465. Western Australia. 27 October 1932. p. 16. Archived from the original on 22 August 2022. Retrieved 1 April 2022 – via National Library of Australia.
"More than Honey blog". ciber.science.uwa.edu.au. Centre for Integrative Bee Research. 11 March 2013. Archived from the original on 11 March 2013. Retrieved 18 August 2022. blog{{cite web}}: CS1 maint: bot: original URL status unknown (link)
"Handbook 2018". University of Western Australia. 2018. Archived from the original on 12 June 2018. Retrieved 7 June 2018.