Martin is author of Atheism: A Philosophical Justification and The Case Against Christianity (Temple Univ. Press), two books that are considered the classic defense of atheism and the classic attack on Christianity, respectively.
Martin published a collection of short stories which present the case for atheism through fiction. The book is The Big Domino in the Sky and Other Atheistic Tales (Amherst, N.Y.:Prometheus Books, 1996). It is reviewed by Finngeir Hiorth in the Summer 1997 issue of Free Inquiry.