Bartle 1963. Bartle, G. F. (1963). „Jeremy Bentham and John Bowring: a study of the relationship between Bentham and the editor of his Collected Works“. Bulletin of the Institute of Historical Research. 36 (93): 27–35. doi:10.1111/j.1468-2281.1963.tb00620.x.CS1-ის მხარდაჭერა: ref=harv (link)
Crimmins 1986, p. 95. Crimmins, James E. (1986). „Bentham on Religion: Atheism and the Secular Society“. Journal of the History of Ideas. University of Pennsylvania Press. 47 (1): 95–110. doi:10.2307/2709597. JSTOR2709597.CS1-ის მხარდაჭერა: ref=harv (link)
Bartle 1963, p. 27. Bartle, G. F. (1963). „Jeremy Bentham and John Bowring: a study of the relationship between Bentham and the editor of his Collected Works“. Bulletin of the Institute of Historical Research. 36 (93): 27–35. doi:10.1111/j.1468-2281.1963.tb00620.x.CS1-ის მხარდაჭერა: ref=harv (link)
Crimmins 1986, p. 95. Crimmins, James E. (1986). „Bentham on Religion: Atheism and the Secular Society“. Journal of the History of Ideas. University of Pennsylvania Press. 47 (1): 95–110. doi:10.2307/2709597. JSTOR2709597.CS1-ის მხარდაჭერა: ref=harv (link)
Laura Geggel (11 September 2018). „Oddball Philosopher Had His Mummified Body Put on Display … and Now His Rings Are Missing“. Live Science. ციტირების თარიღი: 26 March 2019. ციტატა: „We can safely assume that [Guatemalan philosopher and politician] José del Valle received one, as he is featured wearing it in a portrait," Causer said. "Interestingly, on the bookshelf of that portrait is one of Bentham’s works, as well as a Spanish translation of Say’s 'Traité d’économie politique.' It’s a neat, tangible link between Bentham, Say and del Valle.“
Darío, Rubén (1887). „La Literatura en Centro-América“. Revista de artes y letras (ესპანური). Biblioteca Nacional de Chile. XI: 591. MC0060418. ციტირების თარიღი: 25 March 2019. ციტატა: „In Guatemala there was Valle, a man of vast intellect, friend of Jeremías Bentham, with whom he corresponded frequently. Bentham sent him shortly before dying a lock of his hair and a golden ring, shiny as José Cecilio's style.“
Bentham, Jeremy, 1748-1832. (2005). An introduction to the principles of morals and legislation. [Chestnut Hill, Mass.?]: Elibron Classics. ISBN1-4212-9048-0. OCLC64578728.