The ISBN of Waking the Witch - Armstrong novel - is 978-0-525-95178-0.
The ISBN of Waking the Dead - novel - is 0394543564.
The ISBN of The Reckoning - Armstrong novel - is 9780061662836.
The ISBN of Water Witch - novel - is 978-0441873791.
The ISBN of The Gathering - Armstrong novel - is 978-0-061-79702-6.
The ISBN of Waking Dream is 0333960076.
The ISBN of Which Witch? is 0330398008.
The ISBN of Witch Baby is 0064470652.
The ISBN of Winnie the Witch is 0192726838.
The ISBN of The Season of the Witch is 671-2090591.
The ISBN of Coma - novel - is 0316155101.
The ISBN of Forest - novel - is 0670899208.
The ISBN of Girl - novel - is 1416948031.