"'I am Darwin's bull-dog,' he once said ...": (Huxley 1900، Volume 1, p. 363) Huxley, Leonard (1900), Life and Letters of Thomas Henry Huxley. 2 vols 8vo, London: Macmillan
clarku.edu
aleph0.clarku.edu
Huxley, T.H. "To Lizzie, March 27, 1858". Letters and Diary: 1858. Clark University. Archived from the original on 20 February 2014. Retrieved 6 February 2014.
"Death of Mrs Huxley". The Sun. No. 1227. New South Wales, Australia. 3 June 1914. p. 4. Archived from the original on 31 March 2023. Retrieved 2 March 2023 – via National Library of Australia.
"Death of Mrs Huxley". The Sun. No. 1227. New South Wales, Australia. 3 June 1914. p. 4. Archived from the original on 31 March 2023. Retrieved 2 March 2023 – via National Library of Australia.
Huxley, T.H. "To Lizzie, March 27, 1858". Letters and Diary: 1858. Clark University. Archived from the original on 20 February 2014. Retrieved 6 February 2014.