↑Stuart Rosenberg, Rock and Roll and the American Landscape : The Birth of an Industry and the Expansion of the Popular Culture, 1955–1969, iUniverse, (ISBN978-1-4401-6458-3), p. 164.
↑(en) Robert Santelli, Sixties Rock: A Listener's Guide, Contemporary Books, (ISBN9780809254392), p. 278.