The ISBN of Shadow Fires is 0-425-13698-1.
The ISBN of Fires of Winter is 0380757478.
The ISBN of The Shadow Factory is 0385521324.
The ISBN of Shadow Dawn is 055357289X.
The ISBN of The Shadow Speaker is 1423100336.
The ISBN of Shadow of the Dragon is 0152735321.
The ISBN of Shadow of a Bull is 0689300425.
The ISBN of The Chameleon's Shadow is 0230015662.
The ISBN for "Ombria in Shadow" by Patricia A. McKillip is 978-0441009322.
The ISBN of Fires of Azeroth is 0-88677-259-1.
The ISBN of The Fires of Merlin is 0-399-23020-3.
The ISBN of Shadow Forest is 978-0370329369.
The ISBN of The Shadow in the North is 978-0439977814.