I've written a few and continue to write.
As Carl Martin (fiction):
"Touch the Stars: Emergence" co-authored with John Dalmas (Tor Books)
"Edge of Remembrance" (Tharsis Highlands Publishing)
As Rod Martin, Jr. (non-fiction):
"The Art of Forgiveness" (Tharsis Highlands)
and currently finishing up,
"The Bible's Hidden Wisdom, God's Reason for Noah's Flood"