HEAVY MUSIC HISTORY: 13 - Black Sabbath - Distorted Sound Magazine

Born Again (Black Sabbath album) - Wikipedia

BLACK SABBATH - Black Sabbath, Vol.4 - Music

Black Sabbath, Vol.4

Black Sabbath Interview: 'Vol. 4,' 'Snowblind,' 'Cocaine,' 'Changes

1996 reissue on Castle of their top 20 1972 album for Warner Brothers. Digitally remastered from the original mastertapes with faithfully restored

Vol 4

HEAVY MUSIC HISTORY: Sabbath Bloody Sabbath - Black Sabbath - Distorted Sound Magazine

Heavy Music History Archives - Distorted Sound Magazine

The Spawn of Black Sabbath - WSJ

Black Sabbath: 'We used to have cocaine flown in by private plane', Black Sabbath

Tony Iommi's Guitar Gear on Black Sabbath Vol 4

Black Sabbath - Sabbath Bloody Sabbath - Music

Sabbath Bloody Sabbath

Black Sabbath's New Album, '13' - The New York Times