Latour, Melinda (2018). "Santana and the Metaphysics of Tone: Feedback Loops, Volume Knobs, and the Quest for Transcendence". In Fink, Robert; Latour, Melinda; Wallmark, Zachary (eds.). The Relentless Pursuit of Tone: Timbre in Popular Music. Oxford University Press. p. 219 – via Google Books.