The ISBN of My Soul to Keep is 0-7653-1227-3.
The ISBN of The Tears of My Soul is 0688128335.
The ISBN of My Soul Is Rested is 0399-11853-5.
The ISBN of Soul Circus - novel - is 0316608432.
The ISBN of World Soul - novel - is 0025360205.
The ISBN of The Soul of a New Machine is 978-0316491709.
The ISBN of Soul of the Fire is 0-312-89054-0.
The ISBN of Soul On Ice is 0-440-18163-1.
The ISBN of The Soul of the Rhino is 978-1-59921-146-6.
The ISBN of I Sold My Soul on eBay is 1-4000-7347-2.
The ISBN of World Soul - novel - is 0025360205.
The ISBN of Soul Trade - Angel novel - is 0-7434-0699-0.
The ISBN of The Healer's Keep is 0823417603.