Biblio
1960
"X for Exploitation" In New Worlds Science Fiction . Vol. 31.92 - 32.94., 1960.
1963
"X Marks the Pedwalk" In Worlds of Tomorrow . Vol. 1.1., 1963.
1972
"X: A Fabulous Child's Story" In Ms ., 1972.
1975
"Xenofreak/Xenophobe" In Dystopian Visions, Edited by Elwood, Roger [Paul](1943-2007). Englewood Cliffs, NJ: Prentice-Hall, 1975.
2003
The X President. New York: Bantam Books, 2003.
2004
Xen: Ancient English Edition Complete & Unexpurgated. [Whiteville, NC]: Avar Press, 2004.
2005
X out of Wonderland: A Saga. Hanover, NH: Steerforth Press, 2005.
2009
X Isle. Oxford, Eng.: David Fickling Books, 2009.
2014
XOM-B. New York: Thomas Dunne Books, 2014.