Interview: Slipknot Look Back on the Making of 'Iowa' (неопр.). Revolver (28 августа 2014). — «"Fortunately, the band members were able to channel their animosity into their music, creating their most extreme album yet. Songs like "Disasterpiece," "People = Shit," and "The Heretic Anthem" draw far more from death metal's scathing currency than nu-metal's trendy angst."». Дата обращения: 17 августа 2015. Архивировано 21 сентября 2015 года.
Interview: Slipknot Look Back on the Making of 'Iowa' (неопр.). Revolver (28 августа 2014). — «"Fortunately, the band members were able to channel their animosity into their music, creating their most extreme album yet. Songs like "Disasterpiece," "People = Shit," and "The Heretic Anthem" draw far more from death metal's scathing currency than nu-metal's trendy angst."». Дата обращения: 17 августа 2015. Архивировано 21 сентября 2015 года.
