GARDNER, Martin. Origami, Eleusis, and the Soma cube : Martin Gardner's mathematical diversions. Cambridge [u.a.] : Cambridge University Press [u.a.], 2008. xi, 234 s. The new Martin Gardner mathematical library ; 2. Dostupné na internetu: <http://www.loc.gov/catdir/enhancements/fy0834/2008012534-b.html> <http://www.loc.gov/catdir/enhancements/fy0834/2008012534-d.html> <http://www.loc.gov/catdir/enhancements/fy0834/2008012534-t.html> ISBN 978-0-521-73524-7.