↑ R. Rubin and J. P. Melnick, Immigration and American Popular Culture: an Introduction (New York, NY: New York University Press, 2007), ISBN0-8147-7552-7, pp. 162–4.[trích dẫn không khớp]
C. Grunenberg and J. Harris, Summer of Love: Psychedelic Art, Social Crisis and Counterculture in the 1960s (Liverpool: Liverpool University Press, 2005), ISBN0-85323-919-3, p. 137.
↑ Hicks, Michael (1999). Sixties Rock: Garage, Psychedelic and Other Satisfactions. books.google.com: University of Illinois Press. tr. 61. ISBN0-252-02427-3.
↑ Their keyboardist, Bruce Johnston, would go on to join the Beach Boys in 1965. He would recall: "[LSD is] something I've never thought about and never done."[15]
↑ According to Stewart Hope, Graham was "the key early figure... Influential but without much commercial impact, Graham's mix of folk, blues, jazz, and eastern scales backed on his solo albums with bass and drums was a precursor to and ultimately an integral part of the folk rock movement of the later sixties.... It would be difficult to underestimate Graham's influence on the growth of hard drug use in British counterculture."[23]
↑ The growth of underground culture in Britain was facilitated by the emergence of alternative weekly publications like IT (International Times) and Oz which featured psychedelic and progressive music together with the counterculture lifestyle, which involved long hair, and the wearing of wild shirts from shops like Mr Fish, Granny Takes a Trip and old military uniforms from Carnaby Street (Soho) and King's Road (Chelsea) boutiques.[26]