Dregni, Michael. “DeArmond Termolo Control.” Vintage Guitar, https://www.vintageguitar.com/18545/dearmond-tremolo-control/.

Leonard, Michael. “THE GUITARIST’S GUIDE TO GRUNGE: ESSENTIAL BANDS, GEAR AND PLAYERS.” Guitar, https://guitar.com/guides/essential-guide/best-grunge-bands-gear-players-guitars/.

Lux, Michael and Daniel Orkin, directors. The Pedal Movie. Reverb.com.

“Mu-Tron Musitronics.” Mu-Tron, https://mu-tron.com/articles/mu-tron-musitronics/.

“MXR: Rackmount Era.” Jim Dunlop, https://lifestyle.jimdunlop.com/mxr-rackmount-era/.

“The Early History of Fuzz Pedals.” Musician’s Friend, https://www.musiciansfriend.com/thehub/early-history-fuzz-pedals.

“The Thomas Vox ‘Clyde McCoy’ Wah-Wah Pedal – 1967 The History of the Development of the Original Vox Wah Pedal.” VOX Showroom, http://www.voxshowroom.com/us/misc/clyde.html.