O'Connor, J.J.; E.F. Robertson (August 2002), «Robert Hooke», Biographies, MacTutor History of Mathematics Archive] (School of Mathematics and Statistics, Univ. of St. Andrews, Scotland), arkivert frå originalen 3. mars 2009, henta 17. mai 2013
web.archive.org
O'Connor, J.J.; E.F. Robertson (August 2002), «Robert Hooke», Biographies, MacTutor History of Mathematics Archive] (School of Mathematics and Statistics, Univ. of St. Andrews, Scotland), arkivert frå originalen 3. mars 2009, henta 17. mai 2013