ماخذ: Guitar World Magazine May 2015. Judas Priest On Their Metal Masterpiece Defenders of the Faith. Guitar sheet music. 162 pages.
ترجمه: مجله دنیای گیتار مه 2015. Jethro Tull, Ian Anderson and Steven Wilson Clean Up the Classic Albums. نت گیتار. 162 صفحه. HL.77772014.