Harvey Mackay (1996). “Swim with the Sharks Without Being Eaten Alive: Outsell, Outmanage, Outmotivate, & Outnegotiate Your Competition”, Ballantine Books
"Downhere lead singer Marc Martel talks to Whole Notes about going viral, appearing on “Ellen” and sounding like Queen’s Freddie Mercury". Interview with Chad Bonham, www.beliefnet.com.