Sbectol y gwirionedd /
Lovegrove, James.
Davies, Helen Emanuel.
University of Wales, Aberystwyth.Centre for Educational Studies.
Aberystwyth : Canolfan Astudiaethau Addysg,
2007.
Arg. Saesneg gwreiddiol = Original English ed.: Edinburgh: Barrington Stoke, 2005.
Supernatural
Fantasy fiction.
Young adult fiction.