Keith J. Devlin The Math Instinct: Why You're A Mathematical Genius (Along With Lobsters, Birds, Cats, And Dogs), p. 108. New York: Thunder's Mouth Press, 2005, ISBN 1-56025-672-9
Euclid, Elements, Book 2, Proposition 11; Book 4, Propositions 10–11; Book 13, Propositions 1–6, 8–11, 16–18.
emis.de
Boussora, Kenza and Mazouz, Said, The Use of the Golden Section in the Great Mosque of Kairouan, Nexus Network Journal, vol. 6 no. 1 (Spring 2004), [1]
mit.edu
classics.mit.edu
Plato (360 BC) (Benjamin Jowett trans.). "Timaeus". The Internet Classics Archive. Dicapai pada May 30, 2006. Check date values in: |year= (bantuan)
st-andrews.ac.uk
www-history.mcs.st-andrews.ac.uk
"The Golden Ratio". The MacTutor History of Mathematics archive. Dicapai pada 2007-09-18.
wikipedia.org
en.wikipedia.org
Plato (360 BC) (Benjamin Jowett trans.). "Timaeus". The Internet Classics Archive. Dicapai pada May 30, 2006. Check date values in: |year= (bantuan)