Bibliography

Abbott, Edwin A. The annotated flatland : a romance of many dimensions; introduction and notes by Ian Stewart. Cambridge, Mass: Perseus Pub., 2002.

Abbott, Edwin A. Flatland: A Romance of Many Dimensions. New York: Dover Pubs., 1992 (©1884).

"Fourth Dimension." Ask Dr. Math. 25 June 1997. The Math Forum @ Drexel. 19 Dec. 2005 <http://mathforum.org/library/drmath/view/54683.html>.