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"Diary and letter collections". World War I Research Guide. State Library of NSW. Archived from the original on 16 December 2013. Retrieved 18 December 2013.
"Personal Experiences". Military Records. State Library of South Australia. Archived from the original on 13 March 2014. Retrieved 5 December 2013.
"Letters & diaries". State Library of Victoria. Archived from the original on 14 February 2014. Retrieved 26 November 2013.
Arnot, Jean F. "Ifould, William Herbert (1877–1969)". Australian Dictionary of Biography. Australian National University. Archived from the original on 24 April 2013. Retrieved 12 December 2013.