Tài liệu tham khảo Black Sabbath (album)

Tài liệu tham khảo

WikiPedia: Black Sabbath (album) http://www.allmusic.com/album/black-sabbath-mw0000... http://www.allmusic.com/album/black-sabbath-mw0000... http://www.allmusic.com/artist/p3693 http://www.discogs.com/master/723 http://books.google.com/books?id=8ZwZcZ2X5ToC&pg=P... http://www.musicweek.com/story.asp?sectioncode=2&s... http://www.riaa.com/gold-platinum/?tab_active=defa... http://www.robertchristgau.com/get_album.php?id=64... http://www.robertchristgau.com/xg/cg/cg14.php http://rockhall.com/inductees/black-sabbath/bio/