J J O'Connor and E F Robertson. «How do we know about Greek mathematics?». The MacTutor History of Mathematics archive. Universitat de St. Andrews, 01-10-1999. Arxivat de l'original el 2000-01-30. [Consulta: 18 abril 2011].
st-andrews.ac.uk
www-history.mcs.st-andrews.ac.uk
J J O'Connor and E F Robertson. «Eudoxus of Cnidus». The MacTutor History of Mathematics archive. University of St. Andrews, 01-04-1999. [Consulta: 18 abril 2011].
web.archive.org
J J O'Connor and E F Robertson. «How do we know about Greek mathematics?». The MacTutor History of Mathematics archive. Universitat de St. Andrews, 01-10-1999. Arxivat de l'original el 2000-01-30. [Consulta: 18 abril 2011].