^Greta Jones, 'Bell, Julia (1879–1979)', Oxford Dictionary of National Biography, Oxford University Press, Sept 2004; online edn, Jan 2008 accessed 10 May 2008نسخة محفوظة 19 مايو 2020 على موقع واي باك مشين.
^Stratton, F.J.M. "The History of the Cambridge Observatories" Annals of the Solar Physics Observatory, Cambridge Vol. I (1949)
^Olgivy, Marilyn Bailey "The Biographical Dictionary of Women in Science: Pioneering Lives from Ancient Times to the Mid 20th Century" Routledge (2000)
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