^ 1.01.1The History of Philosophy, Vol. IV: Modern Philosophy: From Descartes to Leibniz by Frederick C. Copleston (1958)
^Born 1232 per Mark D. Johnston in Routledge Encyclopedia of Philosophy. London: Routledge, 1998. Older sources (such as versions of Encyclopædia Britannica at least up to 1955) give 1235; the current Britannica gives 1232/33.
^Tisdall, Nigel. Mallorca. Local Heroes – Ramon Llull – reference to his life and work (Thomas Cook Publisher). 2003: 40. ISBN 9781841573274.