(EN) Lester Bangs, Black Sabbath, in Rolling Stones, 17 settembre 1970. URL consultato il 1º giugno 2017 (archiviato dall'url originale il 25 luglio 2012).
«The whole album is a shuck — despite the murky songtitles and some inane lyrics that sound like Vanilla Fudge paying doggerel tribute to Aleister Crowley, the album has nothing to do with spiritualism, the occult, or anything much except stiff recitations of Cream clichés [...] Just like Cream! But worse.»