APA (7th ed.) Citation

Black Sabbath (Musical group), Osbourne, O., Ward, B., Iommi, T., & Butler, G. (1988). Black Sabbath. Warner Bros..

Chicago Style (17th ed.) Citation

Black Sabbath (Musical group), Ozzy Osbourne, Bill Ward, Tony Iommi, and Geezer Butler. Black Sabbath. [Burbank, Calif.]: Warner Bros., 1988.

MLA (9th ed.) Citation

Black Sabbath (Musical group), et al. Black Sabbath. Warner Bros., 1988.