Cita APA (7th ed.)
Irwin, W. (2012). Black Sabbath & philosophy: Mastering reality. Wiley-Blackwell.
Cita Chicago (17th ed.)
Irwin, William. Black Sabbath & Philosophy: Mastering Reality. Chichester, West Sussex ; Malden, MA: Wiley-Blackwell, 2012.
Cita MLA (9th ed.)
Irwin, William. Black Sabbath & Philosophy: Mastering Reality. Wiley-Blackwell, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.