Browne, Janet (2010), "Making Darwin: Biography and the Changing Representations of Charles Darwin", Journal of Interdisciplinary History, 40 (3): 347–373, doi:10.1162/jinh.2010.40.3.347, S2CID145165183
"Bell, George Douglas Hutton, (18 Oct. 1905–27 June 1993), Director, Plant Breeding Institute, Cambridge, 1947–71, retired; a Vice President, Royal Society, 1976–78". Who Was Who. Oxford University Press. 1 December 2007. doi:10.1093/ww/9780199540884.013.u171083.
Harvard "Janet Browne, Aramont Professor of the History of Science", Department of the History of Science, Harvard University, Mass., USA, Retrieved October 23, 2018.
Browne, Janet (2010), "Making Darwin: Biography and the Changing Representations of Charles Darwin", Journal of Interdisciplinary History, 40 (3): 347–373, doi:10.1162/jinh.2010.40.3.347, S2CID145165183
"Bell, George Douglas Hutton, (18 Oct. 1905–27 June 1993), Director, Plant Breeding Institute, Cambridge, 1947–71, retired; a Vice President, Royal Society, 1976–78". Who Was Who. Oxford University Press. 1 December 2007. doi:10.1093/ww/9780199540884.013.u171083.