Kvaredro: Malsamoj inter versioj

*{{el}} {{MathWorld | URL = Tetrahedron | titolo = Kvaredro}}

*{{el}} [http://www.mathconsult.ch/showroom/unipoly/ La uniformaj pluredroj]

*{{el}} [http://www.georgehart.com/virtual-polyhedra/vp.html Virtualaj realaj pluredroj]*
{{el}} [http://www.korthalsaltes.com/ PaperoPaperaj modeloj de pluredroj]

*{{el}} [http://mathforum.org/pcmi/hstp/resources/dodeca/paper.html ''mirigaMiriga kvaredro'']

*{{el}} [http://www.nyu.edu/its/pubs/connect/spring04/kyriannis_nyunet3.html kvaredra kerna reto] Apliko de kvaredra strukturo por datuma reto