(en) Cabala : sive scrinia sacra : Mysteries of state and government in letters of illustrious persons and great agents in the reigns of Henry the Eighth, Queen Elizabeth, K : James, and the late King Charls : In two parts, in which the secrets of empire and public manage of affairs are contained : With many remarkable passages no where else published, (lire en ligne)
(en) Mordechai Feingold, The Mathematicians' Apprenticeship : Science, Universities and Society in England, 1560–1640, CUP Archive, , 248 p. (ISBN978-0-521-25133-4, lire en ligne), p. 118