"Eugénie Henderson". Firthian Phonology Archive. Department of Language and Linguistic Science, University of York. Archived from the original on 2 October 2015. Retrieved 3 January 2018.
ukwhoswho.com
"Henderson, Prof. Eugénie Jane Andrina", Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2016; online edn, Oxford University Press, 2014; online edn, April 2014 accessed 26 Nov 2017
web.archive.org
"Eugénie Henderson". Firthian Phonology Archive. Department of Language and Linguistic Science, University of York. Archived from the original on 2 October 2015. Retrieved 3 January 2018.